EP3432278A1 - Identification device, identification method, identification program, and computer readable medium containing identification program - Google Patents

Abstract

An identification device according to which anti-counterfeiting medium is used -counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether or not the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; The anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the captured image data used for authenticity determination.

Description

[Technical Field]

The present invention relates to identification devices, identification methods, identification programs and computer readable media including identification programs used for authenticity determination against forgery of valuable securities.

The present application is based on claims of Japanese Patent Application no. 2016-050172 filed in Japan on March 14, 2016 and Japanese Patent Application no. 2016-050277 filed in Japan on March 14, 2016, and the contents of which are incorporated by reference.

[Background Art]

As banknotes, stock certificates, gift vouchers, and credit cards, as well as products as well as pharmaceutical products, food products, and high-class brand products. The anti-counterfeiting media are directly printed or transferred to valuable securities. Further, sealing stickers are provided with anti-counterfeiting mediums attached to products.

(Fake or copied products) only relying on the presence of anti-counterfeiting media.

Examples of the anti-counterfeiting media include diffraction gratings and holograms whose color or pattern changes depending on which angle the anti-counterfeiting medium is observed. There are other examples of the anti-counterfeiting medium which include optically variable device (OVD) ink and color pigment whose color or brightness changes.

Whether the anti-counterfeiting medium itself is genuine or not easily verified by comparison between a genuine anti-counterfeiting medium and a forged anti-counterfeiting medium, or visual inspection by an expert. However, authenticity determination of anti-counterfeiting medium by visual inspection is difficult for general users.

In the case where it is difficult to perform authenticity determination of anti-counterfeiting medium by visual inspection, dedicated authenticity determination devices (eg, refer to PTL 1), the anti-counterfeiting medium is used.

However, the dedicated authenticity determination device requires specialized knowledge or special tools. Therefore, it is difficult for general users to perform authenticity determination of the anti-counterfeiting medium by using such authenticity determination devices.

In addition, in the determination of the authenticity of an anti-counterfeiting medium, the optical pattern changes at each observation angle. It is necessary to estimate the observation angle, which indicates to the imaging device of the imaging device the anti-counterfeiting medium. In estimation of the observation angle, a gyro sensor has been used in the image capturing device.

There is a known method of determining authenticity of anti-counterfeiting medium, in which an observation angle estimated by the gyro sensor together with information on the image of the anti-counterfeiting medium for authenticity determination is input into an identification program.

[Citation List] Patent Literature

PTL 1: JP 3865763 B

[Summary of the Invention] Technical problem

However, in the above sense of authenticity determination, the anti-counterfeiting medium is imaged at an angle suitable for authenticity determination.

As a consequence, while moving the imaging device to capture an image of the anti-counterfeiting medium, the user can not determine whether the imaging device is at an imaging viewpoint position suitable for imaging for the authenticity determination.

Further, there is another method in which the anti-counterfeiting medium is displayed on the screen of the imaging device image the anti-counterfeiting medium at a certain angle.

This method, however, still does not allow for smooth authenticity determination, since it is burdensome for the user to overlap the anti-counterfeiting medium of the imaging target with the outline and the user can not intuitively identify the imaging algorithm for the anti-counterfeiting medium is being performed. As a consequence, the user can not know whether or not the authenticity is actually used progress until the result of the authenticity determination of the anti-counterfeiting medium imaged by the user is outputted.

Accordingly, the user may be unable to complete the process of the invention. This hinders smooth operation of authenticity determination.

In addition, the user is asked to do so by using an image of the anti-counterfeiting medium imaged at a suitable observation angle. As a result, while the imaging device is being used to capture an image of the anti-counterfeiting medium, the user can not recognize the authenticity determination.

Accordingly, the user may be concerned about whether or not he or she is carrying out the diagnosis. This hinders smooth operation of authenticity determination.

The present invention provides and provides an identification device, an identification method, an identification program, and a computer readable medium The process of determining the accuracy of the process is known.

The present invention provides and provides an identification device, an identification method, an identification program, and a computer readable medium allow a user to perform smoothly authenticity determination without being concerned about the process of the authenticity determination.

[Solution to Problem]

In order to solve the above problem, according to the present invention, there is provided an anti-counterfeiting medium device including: a similarity between image and image of the anti-counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether or not the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; The anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the captured image data used for authenticity determination.

The difference between the results of an imaging angle and an imaging device is shown in the figure below device coordinate value of the imaging viewpoint and a reference imaging angle, respectively, in a three-dimensional coordinate system.

Each image of the same is used as the imaging device for each reference imaging viewpoint, as well as for the captured image data is required for authenticity determination.

Image in a handwritten image in the form of a reference image anti-counterfeiting medium is captured.

Images in a video file of the anti-theft image in the identification device according to the invention. counterfeiting medium.

The identification device of the match-percentage is displayed on a display unit screen of the display unit to notify the match-percentage.

According to a second aspect of the present invention, an identification method is provided for performing authenticity determination anti-counterfeiting medium and image data, the degree of similarity being calculated by a similarity calculating unit ; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the same; The concept of an anti-counterfeiting medium and a reference imaging viewpoint is as it is predefined as the imaging viewpoint notified by a match-percentage notification unit.

According to a third aspect of the present invention, an anti-counterfeiting medium is used Data collection and analysis of the data in the anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; The anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the image data collection used for authenticity determination.

According to a fourth aspect of the present invention, a computer readable medium is provided Identification process for the performance of an anti-counterfeiting medium -counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; The anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the image data collection used for authenticity determination.

According to a fifth aspect of the present invention, there is a reference to an anti-counterfeiting medium calculates a degree of similarity between image data and anti-counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether or not the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; A progress notification unit that calculates and / or issues a degree of progress, which is a ratio of a given number of authenticity determinations to a predefined number of authenticity determinations.

In the identification device according to the invention, the progress notification unit calculates a degree of progress which as a result of which the image of the data is given has been determined data to a number of reference image data.

In the identification device according to the fifth aspect of the present invention, the image data taken at each angle imaging angle, and the degree of progress may be calculated to the previous imaging angle.

The identification device in the image is in the background. The image of the image is in the background -counterfeiting medium is captured.

In the identification device according to the invention, the image of the image in a video of the anti-counterfeiting medium.

The identification device according to the present invention is a device for displaying the information on a display unit unit to notify the degree of progress.

According to a sixth aspect of the present invention, there are two types of anti-counterfeiting mediums captured image data of the anti-counterfeiting medium and reference image data, the degree of similarity being calculated by a similarity calculating unit; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of whether or not the authenticity is determined; by a progress notification unit (Substantiv, Plural). (noun, feminine) determination by a progress notification unit.

According to a seventh aspect of the invention, there is an anti-counterfeiting medium, which is an anti-counterfeiting medium image of the anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; A statement of the validity of the authenticity determination is given in the form of a number of authenticity determinations.

According to an anti-counterfeiting medium, it is therefore intended to be understood as meaning an anti-counterfeiting medium the data from the anti-counterfeiting medium and the reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree; A statement of the validity of the authenticity determination is given in the form of a number of authenticity determinations.

[Advantageous Effect of the Invention]

As described above, the first to fourth aspect of the present invention is to provide an identification device, an identification method, an identification program, and a computer readable medium The process of determining the accuracy of the process is known.

As described above, the fifth aspect of the present invention is an identification device, an identification method, an identification program, and a computer readable medium allow a user to perform smoothly authenticity determination without being concerned about the process of authenticity determination.

[Letter Description of the Drawings]

• Fig. 1 is a block diagram which illustrates a configuration example of an identification device according to a first embodiment.
• Fig. 2 is an illustration of an image data storage unit 113 in an image data storage unit.
• Fig. 3 is a diagram which illustrates an anti-counterfeiting medium at the same time.
• Fig. 4 is a schematic plan view of an anti-counterfeiting medium according to the first embodiment.
• Fig. 5 is a schematic cross-sectional view of the anti-counterfeiting medium being taken along the line currently in Fig. 4 ,
• Fig. 6 is a perspective view which illustrates an example of a second uneven structure of the anti-counterfeiting medium according to the first embodiment.
• Fig. 7 is a schematic view which illustrates the second uneven means of emission diffracted light.
• Fig. 8 is a perspective view which illustrates an example of a first uneven structure of the anti-counterfeiting medium according to the first embodiment.
• Fig. 9A is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 9B is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 9C is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 10A is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 10B is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 10C is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 11A is a view which illustrates an example of a match-percentage indicator that is displayed on a display unit 112 by a match-percentage notification unit 106.
• Fig. 11B is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 11C is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 12A is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 12B is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 12C is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 13A is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 13B is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 13C is a view of what is illustrated by a match-percentage notification unit 106.
• Fig. 14 is a diagram illustration of a data collection unit for authenticity determination in the image data storage unit 113.
• Fig. 15 authenticity determination object using an anti-counterfeiting medium in the identification device according to the first embodiment.
• Fig. 16 is a flowchart that details a process of imaging viewpoint guidance for an imaging device at step S3 in the flowchart shown in FIG Fig. 15 ,
• Fig. 17 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the first embodiment.
• Fig. 18 is a block diagram which illustrates a configuration example of an identification device according to a second embodiment.
• Fig. 19A This is an example of a progress notification unit 111.
• Fig. 19B This is an example of a progress display unit 111.
• Fig. 19C This is an example of a progress display unit 111.
• Fig. 20 authenticity determination process for an authenticity determination object performed using an anti-counterfeiting medium in the identification device according to the second embodiment.
• Fig. 21 authenticity determination process for authenticity determination object performed by using anti-counterfeiting medium in the identification device according to a third embodiment.
• Fig. 22 is a block diagram which illustrates a configuration example of an identification device according to a fourth embodiment.
• Fig. 23 is a block diagram which illustrates a configuration example of an identification device according to a fifth embodiment.
• Fig. 24 is a block diagram which illustrates a configuration example of an identification device according to a third embodiment.
• Fig. 25 is an illustration of an image data storage unit 3112.
• Fig. 26 is a diagram which illustrates at an angle at anti-counterfeiting medium is observed by the imaging unit 3101.
• Fig. 27 is a schematic plan view of an anti-counterfeiting medium according to the sixth embodiment.
• Fig. 28 is a schematic cross-sectional view of the anti-counterfeiting medium taken along the line Currently in Fig. 32 ,
• Fig. 29 is a perspective view which illustrates an example of a second uneven structure of the anti-counterfeiting medium according to the sixth embodiment.
• Fig. 30 is a schematic view which illustrates the second uneven means of emission diffracted light.
• Fig. 31 is a perspective view of an example of a first uneven structure of the anti-counterfeiting medium according to the sixth embodiment.
• Fig. 32 is a diagram illustration of a data collection unit for authenticity determination in the image data storage unit 3112.
• Fig. 33A is a view 3110 of a progress notification unit 3110.
• Fig. 33B is a view 3110 of the progress notification unit 3110.
• Fig. 33C is a view 3110 of the progress notification unit 3110.
• Fig. 34 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the sixth embodiment.
• Fig. 35 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the sixth embodiment.
• Fig. 36A This is an example of a progress indicator 3110 that is not displayed on the screen of the display unit 3111.
• Fig. 36B This is an example of a progress indicator 3110 that is not displayed on the screen of the display unit 3111.
• Fig. 36C This is an example of a progress indicator 3110 that is not displayed on the screen of the display unit 3111.
• Fig. 37 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to a seventh embodiment.
• Fig. 38 is a block diagram which illustrates a configuration example of an identification device according to an embodiment.
• Fig. 39 is a block diagram which illustrates a configuration example of an identification device according to an embodiment.

[Description of Embodiments] <First Embodiment>

With reference to the drawings, a first embodiment of the invention will be described.

Fig. 1 is a block diagram which illustrates a configuration example of an authentication device according to a first embodiment. In Fig. 1 to authenticity determination device 1 includes an imaging unit 101, to imaging control unit 102, to exposure control unit 103, to illumination unit 104, to observation angle estimation unit 105, a match-percentage notification unit 106, to available image selecting unit 107 A reference image generation unit 108, a similarity calculation unit 109, an authenticity determination unit 110, a display unit 112, and an image data storage unit 113. In the identification device according to the first embodiment, the imaging unit 101 and the illumination The anti-counterfeiting media unit is designed to provide authentication to retroreflective anti-counterfeiting media.

The imaging unit 101 may include a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) image sensor. The imaging unit 101 is in the image data storage unit 113.

The imaging control unit 102 captures the image of the imaging unit 101, including a focus on the imaging element (ISO) sensitivity (International Organization for Standardization (ISO) sensitivity) pattern (color of light (wavelength) or an image of letters or pictures) emitted from the anti-counterfeiting medium in response to the incident light.

The exposure control unit 103 in exposure, including a shutter speed, an aperture value, the presence or absence of illumination light, and illumination light intensity. Moreover, the illumination control unit is illuminated by the illumination of the anti-counterfeiting medium to be imaged by the authenticity determination device 1.

The illumination unit 104 is not limited to general illumination which continuously irradiates an imaging target with light, but may be a light emission device called an electronic flash or strob (registered trademark) which irradiates the imaging target with light for a short period of time , The illumination unit 104 irradiates the imaging device 103. Here, the imaging device 102 supplies a control signal indicative of an imaging timing Accordingly, in response to the imaging control unit 102, the illumination control unit 103 outputs to the illumination unit above.

The observation angle estimation unit 105 is configured to calculate an imaging viewpoint from a coordinate conversion equation (described later). The imaging viewpoint is also an imaging position (imaging coordinate value), which is a position at which the image data of the anti-counterfeiting medium are captured in a three-dimensional space and at an imaging direction unit 101. This is the observation angle estimation unit 105 of the anti-counterfeiting medium 400 and an imaging coordinate value of the image-forming unit 101 relative to the anti-counterfeiting medium 400 which is captured for deriving image data. Thus, the imaging viewpoint (a set of imaging coordinate value and imaging angle) is obtained.

The observation and estimation unit 105 The image of the image obtained therefrom. The image of the image obtained therefrom the image data storage unit 113. This observation angle causes a difference in the pattern of observed light when emitted from the anti-counterfeiting medium in response to the incident light.

In the present embodiment, one or more pieces of anti-counterfeiting medium are imaged by the imaging unit 101. In capturing multiple pieces of the image data, the image data needs to be captured with different observation angles among the pieces of the image data. Data in the three-dimensional space by using a predeterminable unit conversion equation as described above.

The coordinate conversion equation used is an equation generated in such a manner as a pixel position in the two-dimensional coordinate in each piece of the captured in advance the image data and coordinate position in the three-dimensional space are correlated to each other when the three-dimensional space is reproduced as a pre-process for authenticity determination of the anti-counterfeiting medium provided in an authenticity determination object. The pre-generated coordinate conversion equation is written in advance for the authenticity determination object or for each authenticity determination object.

Fig. 2 is an illustration of the concept of data storage unit 113. In the captured image data table shown in FIG Fig. 2 , image pieces of information image, information points, and imaging angles (surveillance angles), which are images of the images of the image data, and image information points are written and stored.

The captured image data identification information.

The imaging angle (observation angle) is located at the imaging unit 101, at which point the image of the anti-counterfeiting medium is located. where an authenticity determination object is placed in a coordinate system of a three-dimensional coordinate system with the originating at any one of vertices or coordinate points of the authenticity determination object. The imaging coordinate value at the imaging unit 101 captures an image of the authenticity determination object in the three-dimensional space. The image data is stored in a data storage unit 113 and serves as it is read out.

Fig. 3 is a diagram illustrating the observation angle of the imaging unit 101 relative to the anti-counterfeiting medium. In Fig. 3 , the anti-counterfeiting medium 400 is used to prevent and copy your articles, including banknotes, stock certificates, and notes products. The anti-counterfeiting medium 400 is directly printed or transferred onto the notes or valuable securities, or printed or sealed onto the label or tags attached to products (or packages of products).

In Fig. 3 , the anti-counterfeiting medium 300a of a credit card 300. Examples of the anti-counterfeiting medium 400 according to the present invention include a diffraction grating or a hologram having color or pattern changes depending upon the observation angle; and may be formed using optically variable device (OVD) or a color pigment having color or brightness changes depending on the observation angle. A light source (also referred to as "irradiation angle") 400, which is angled against a light irradiation direction 200A and a normal line 350. With the supply of the imaging light, the anti-counterfeiting agent emits light of a predictive pattern. The light pattern emitted from the anti-counterfeiting medium in response to the irradiation light depends on the observation angle α and the irradiation angle β.

300. The observation angle is 300. The observation angle α is an angle formed between an imaging direction 101A of the imaging unit 101 and the normal line 350. Here, the observation angle estimating unit 105 in a three-dimensional space in which the Z-axis is taken as a direction parallel to the normal line 350, and the X-axis and Y-axis are taken as directions parallel with each side of the credit card. For example, the credit card 300 is positioned in a two-dimensional plane including the X-axis and the Y-axis coordinate system 300 is parallel to the Z-axis. The three-dimensional shape of the credit card is written in advance as known information, together with the coordinate conversion equation.

The anti-counterfeiting medium 400 wants to be detailed below.

The anti-counterfeiting medium 400 may be a hologram or the like, which emits various types of diffracted light according to the diffraction structure. In this case, various types of holograms such as reflection, transmission, phase, and volume holograms can be used.

Having the following description will be made on the example of relief structure having uneven structure.

Methods for forming uneven structures such as a first and second structure 310 which are formed in a relief structure forming layer 302 as shown in Figs. 4 and 5 include various techniques such as radiation curable molding, extrusion molding and thermal molding using a metal stamper or the like.

The first uneven structure 310, having a groove-shaped structure including bumps and recesses, may have an uneven structure as a relief diffraction grating structure or a directional scattering structure having a plurality of regions in which a linear-shaped bumps and recesses are arrayed in the same direction.

In general, most diffraction gratings typically used for displays have spatial frequencies in the range from 500 to 1600 / mm so that different colors can be displayed in a certain direction according to the spatial frequency or the direction of the diffraction grating.

On the other hand, the directional scattering structure shown in Fig. 8 has a constant orientation direction 332 in a particular segment or cell. The light scattering structures 331 are each in a straight line, and arrayed substantially parallel to each other in a particular segment or cell.

The Light Scattering Structures 331 may intersect with each other in a longitudinal direction of some of the light scattering structures 331 and a longitudinal direction of other scattering structures 331 may intersect with each other as long as the regions of the directional scattering structure 330 have scattering ability with sufficient anisotropy.

According to the above structure, when the region of the directional scattering structure 332, the region appears relatively bright due to the high scattering ability.

On the other hand, when the region including the directional scattering structure 333, the region appears relatively dark due to low scattering ability.

Accordingly, in the segment or cell including the light scattering structures 331, any orientation direction 332 may be determined in each segment or cell to provide a pattern of relatively bright and dark parts, and reversing light and dark parts is observed by changing the position of observation or light irradiation position.

The above first uneven structure 310 grating structure or directional scattering structure.

Further, Fig. 6 shows a perspective view of an example of a structure that can be applied to the second uneven structure 320.

The second uneven structure 320 shown in Fig. 6 includes a bumps 321. Although the second uneven structure 320 is formed solely by the bumps 321, this is only an example. The second embodiment of the present invention is therefore to be considered as a "one of a kind".

In the present embodiment, each recess or bump on the second underneath structure 302 has a surface area 1.5 times larger than the footprint required for each recess or bump when disposed on the surface of the relief structure forming layer 302.

1.5 times larger than the footprint, favorable low reflectivity and low scattering properties can be obtained. This is because of the second-in-a-row structure. In the case of the first uneven structure, it can be easily recognized less than 1.5 times the footprint, the reflectivity is increased, which is not favorable.

Further, the paralysis of the bumps in the second structure.

The forward tapered shape is a cross-sectional area of the bumps or recesses, measured parallel to the substrate surface, decreasing from the proximal end to the distal end of the bumps or recesses. More specifically, the forward tapered shape may be conical, pyramidal, elliptical, columnar or cylindrical, prismatic or rectangular cylindrical, truncated conical, truncated pyramid, or truncated elliptical shapes, a shape where cone is adjoined to a column or cylinder, or a shape where a pyramid is adjoined to a prism or rectangle, hemisphere, semi-ellipsoid, bullet, or round-bowl shape.

Fig. 6 shows an example where the second uneven structure 320 has a constant center Distance between adjacent bumps or recesses. As shown in Fig. 7 When it is irradiated to the second hub structure 320, the second hub structure 320 emits diffused light in a specific direction relative to the travel direction of an incident light 501.

In general, the diffracted light can be represented by the following expression: $$d\left(\mathrm{sin\; .alpha}\pm \mathrm{sin\beta }\right)=\mathrm{n\lambda }$$

In equation (1), d represents the distance between the bumps or recesses, and λ represents the wavelengths of the incident light and the diffracted light. Moreover, α represents the incident angle of the incident light, and β represents the emission angle of the diffracted light. Further, n represents an order. Since the most representative is diffused light, it can be considered that n = 1 is satisfied.

The incidence angle α may be the same as the emission angle of zero or diffracted light, that is, regular reflected light. For parameters α and β, the positive direction is defined as a clockwise direction with respect to the direction normal to the display Fig. 5 , Equation, (1) can be transformed as below: $$d\left(\mathrm{sin\; .alpha}-\mathrm{sin\beta }\right)=\mathrm{\lambda }$$

Thus, when the center distance between the bumps or recesses, and the angle of incidence is 503 changes according to the wavelength λ as clearly seen from equation (2). Therefore, in the case where the illumination is white, the color is imaged by the imaging unit.

The second uneven structure 320 has the center distance of 400 nm or less between the bumps or recesses. Accordingly, the image appears almost black when captured in the normal direction. However, under a specific condition, that is, at environment where the incident angle α of white light is in the range of 60 ° to 90 °, the emission angle | β | of the primary diffused light 503 with a particular wavelength can be designed to be close to the incident angle.

For example, in a case where the incident angle α = 60 ° and d = 340 nm are satisfied, the emission angle | β | at λ = 600 nm is approximately 64 °.

On the other hand, since the first uneven structure is a diffraction grating structure or the like, it is difficult to design the emission angle of the primary diffracted light to be close to the incident angle.

Accordingly, in an operation by the authenticity determination device 1, the light source 200 and the imaging unit 101 are shown to be relatively close to each other ,

Moreover, the anti-counterfeiting medium 400 may have a configuration which uses a plasmon propagation produced by a fine structure such as nanometer controlling the depth of the uneven structure.

The anti-counterfeiting medium 400 may also have a configuration which uses retro-reflection properties of microspheres or a spherical structure; a configuration like an angle-controlled mirror in a specific direction; and a configuration like printed products having an uneven structure produced by intaglio printing.

Further, the anti-counterfeiting medium may also have a structure in which a large number of walls with some height, which are used for a peep prevention film or the like, are located in a narrow area to limit vision; a configuration which uses a parallax barrier in which thin lines are arrayed at a specific time on a surface. a lenticular lens or microlens arrays so that the image forms behind the lens looks as if it changes.

Further, the anti-counterfeiting medium 400 may also have a configuration which includes a pearl pigment in which mica is coated with metal oxide, by printing or the like.

The anti-counterfeiting medium 400 may have, for example, a configuration using a multi-layered thin film in which a differential layer of thin films having different refractive indexes on the reflection angle and the transmission angle of the incident light due to interference phenomenon; a configuration in which a multi-layered thin film is crushed into flake shapes and applied as a pigment by printing or the like; a configuration using printed particles; in a liquid crystal material represented by cholesteric liquid crystal is immobilized in polymer or the like. The liquid crystal material may include a material in a planar shape or a material crushed into pigment to be used for printing or the like.

Further, the anti-counterfeiting medium 400 may have, for example, a configuration which uses a magnetically oriented material in which a magnetic substance such as iron oxide, chromium oxide, cobalt and ferrite is magnetically aligned in a planar shape to impart directivity to the reflective light and transmission light; a configuration having a multi-layered film by using the above magnetically oriented material as a core and additional performing chemical processing or the like as described above; nano-meter sized particles represented by silver nano particles or quantum dots.

Referring back to Fig. 1 , the observation angle estimation unit 105 when calculating the imaging angle of each image of the three hundred-dimensional shape of the credit card 300 in the three-dimensional coordinate system to each pixel (coordinate) of the image data (two-dimensional coordinate system) using the above coordinate conversion equation. Thus, the imaging coordinate value at which the three-dimensional coordinate system of the three-dimensional space, and the imaging angle of the image is obtained. Here, the observation angle estimating unit 300 in the three-dimensional space as described above, any one of the vertices of the three-dimensional shape of the credit card system, the normal line 350 is parallel to the Z axis, and each side is parallel to the X axis or Y axis.

Then, on the basis of the three-dimensional shape of the credit card 300, the observation angle estimation unit 105 captures the image data in the three-dimensional coordinate system , the observation angle estimating unit 105 calculator an imaging angle (observation angle) 101 and the imaging direction of the imaging unit 101 image data, together with the calculated imaging coordinate value, imaging angle, and image data in the image data storage unit 113.

101. In the camera calibration, a calibration board is shown in three-dimensional shape two-dimensional pixels in a two-dimensional coordinate system of the three-dimensional space in a two-dimensional coordinate system the captured image data. Accordingly, the above-described coordinate conversion equation which indicates a relative positional relationship between the imaging unit 101 and the calibration board (hereinafter "external parameter"), as well as at the optical center of the imaging unit 101, is a light beam incident vector at each pixel (two-dimensional pixel), lens distortion, and the like (hereinafter, "internal parameters of the imaging unit 101") are estimated.

In other words, according to the observation angle estimation unit 105, which is re-configured based in advance, that is, on a two-dimensional image of the calibration board. The coordinate conversion equation, in the two-dimensional coordinate system, shows the relationship between the coordinate points in the three-dimensional coordinate system. is acquired when the camera calibration is performed.

The device is also shown in advance of the imaging unit 101 and is known to be at the time of imaging determination of the anti-counterfeiting medium in the identification device, and the three-dimensional shapes of the authenticity determination object and the anti-counterfeiting medium are also known. Accordingly, image data of the anti-counterfeiting medium is obtained from a differential imaging viewpoint, and the above-described coordinate conversion equation is used to obtain information on a plurality of corresponding points between the coordinate points in the three-dimensional coordinate system Thus, the relative positional relationship between the imaging unit 101 and the anti-counterfeiting medium can be estimated. Similarly, in the case where the anti-counterfeiting medium is captured only once, the above-described coordinate conversion equation is used to obtain information on a plurality of corresponding points between the coordinate points in the three Thus, the relative positional relationship between the imaging unit 101 and the anti-counterfeiting medium can be estimated. That is, the imaging coordinate value and imaging angle (obtained from the imaging direction as described above) of the imaging unit 101 in capturing an image of the anti-counterfeiting medium can.

In the present embodiment, an observation angle in capturing image data can be used by Z. Zhang ( Z. Zhang, "A flexible new technique for camera calibration", IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 11, pages 1330-1334, 2000 ), which is one of the well-known techniques of camera calibration. Z. Zhang is used to estimate the observation angle, the image is captured and the image is captured fixed focus when the camera calibration is performed.

The match-percentage notification unit 106 and the imaging point of view of the imaging unit 101 and the imaging point of view of the anti-counterfeiting medium 400 in the three-dimensional coordinate system, the imaging angle value 101, and the imaging angle 105. The three-dimensional coordinate system is generated, for example, taking a mark on the surface of the credit card. Alternatively, by printing or attaching. A feature of the captured image as well as a vertex of the anti-counterfeiting medium 400 on the credit card 300 may be used as a marker. The reference imaging viewpoint is a combination of data from a reference imaging angle and a reference imaging coordinate value.

Further, the reference imaging viewpoint is pre-set, for example, on the basis of the irradiation angle of the irradiation light irradiated onto the anti-counterfeiting medium 104, and the interrelation among the coordinate values of the illumination unit 104, the imaging unit 101, and the anti-counterfeiting medium 400 in the three-dimensional coordinate system so that the pattern of the light is emitted from the anti-counterfeiting medium 101 when an image of the anti-counterfeiting medium 400 is captured. In the authenticity determination device (eg, mobile terminals including cellular phones) in the authenticity determination device is installed), the reference imaging viewpoint is set for each authenticity determination device, taking the above marker as a reference. Here, the reference imaging point of reference and reference imaging angle, which is the imaging viewpoint for capturing an image of the anti-counterfeiting medium 400 on the credit card 300 in the three-dimensional coordinate system, can be pre-set since the relative position of the imaging unit 101 and the illumination unit 104 in the authenticity determination device 1 are known.

The match-percentage notification unit 106 at the imaging point of interest Q (x1, y1, z1) of the imaging unit 101 at the imaging angle α1 indicative of the imaging direction of the imaging unit 101 at the imaging viewpoint, and a reference coordinate value ΔP (Δx, Δy, Δz) and to imaging angle difference Δα. The match-percentage notification unit 106 may therefore calculate a square difference ΔR between the reference coordinate value P and the reference coordinate value Q as a distance between the reference coordinate value and the reference coordinate value Q.

$$\mathrm{\Delta P}=\left(\left(\mathrm{x}-\mathrm{x}1\right)+\left(\mathrm{y}-\mathrm{y}1\right)+\left(\mathrm{z}-\mathrm{z}1\right)\right)$$

$$\mathrm{\Delta R}={\left({\left(\mathrm{x}-\mathrm{x}1\right)}^2+{\left(\mathrm{y}-\mathrm{y}1\right)}^2+{\left(\mathrm{z}-\mathrm{z}1\right)}^2\right)}^{1/2}$$

Here, the following equations are established: $$\mathrm{\Delta \alpha }=\mathrm{\alpha }-\mathrm{<figure-callout\; id="1"\; label="\alpha "\; filenames="imgf0012.png"\; state="\{\{state\}\}">\alpha </figure-callout>}1$$

$$\mathrm{.DELTA.P}=\left(\left(\mathrm{x}-\mathrm{x}1\right)+\left(\mathrm{y}-\mathrm{<figure-callout\; id="1"\; label="y"\; filenames="imgf0012.png"\; state="\{\{state\}\}">y</figure-callout>}1\right)+\left(\mathrm{z}-\mathrm{<figure-callout\; id="1"\; label="z"\; filenames="imgf0012.png"\; state="\{\{state\}\}">z</figure-callout>}1\right)\right)$$

$$\mathrm{.DELTA.R}={\left({\left(\mathrm{x}-\mathrm{x}1\right)}^2+{\left(\mathrm{y}-\mathrm{<figure-callout\; id="1"\; label="y"\; filenames="imgf0012.png"\; state="\{\{state\}\}">y</figure-callout>}1\right)}^2+{\left(\mathrm{z}-\mathrm{<figure-callout\; id="1"\; label="z"\; filenames="imgf0012.png"\; state="\{\{state\}\}">z</figure-callout>}1\right)}^2\right)}^{1/2}$$

Moreover, the match-percentage notification unit ΔP and the imaging angle difference. The evaluation level is different depending on the method of progress notification. Furthermore, the match-percentage notification unit 106 The Imaging Value notifies a user whether authenticity determination is ready to be performed or not.

Then, the match-percentage notification unit 106 displays on a screen 111A a match-percentage indicator, which indicates the degree to which the reference imaging viewpoint the imaging viewpoint of the imaging unit 101 is relative to the anti-counterfeiting medium 400 so as to match the imaging viewpoint with the imaging viewpoint.

Figs. 9A to 9C are views which illustrate examples of the match-percentage indicator displayed on the screen 112 by the match-percentage notification unit Figs. 9A to 9C a capture image including an image 1112 of the credit card 300 and a match-percentage indicator 1111 is displayed on the screen 111A Fig. 1 ) of the authenticity determination device 1.

In Figs. 9A to 9C , a progress bar is used as the match-percentage indicator 1111.

As shown in Figs. 9A and 9B , a progress meter 1111B fills the area corresponding to the calculated match-percentage. Accordingly, in the present embodiment, the authenticity determination of the anti-counterfeiting medium is ready to be performed. Therefore, the user can visually recognize that the process of authenticity determination is actually in progress, and smoothly perform the process of authenticity determination.

The match-percentage notification unit 106 assigns the imaging angle difference .DELTA..alpha. And the square difference. This evaluation formula is a function for calculating and evaluating the progress bar in Figs. 9A to 9C , by assigning the imaging angle difference Δα and the square difference ΔR into variables.

Alternatively, another configuration is possible in which the difference in angle Δθ and the difference ΔR are each used as a dimension, and a two-dimensional evaluation table is written in advance , In this configuration, the match-percentage notification unit 106 reads out the match-percentage from the evaluation table as an evaluation value corresponding to the obtained imaging angle difference .DELTA..alpha. and the square difference .DELTA.R.

On the basis of the obtained imaging angle difference Δα and the difference ΔR, the match-percentage notification unit 1111M every time when a new match-percentage is obtained.

Fig. 9C where authenticity determination of the anti-counterfeiting medium makes a determination of "genuine".

When the reference imaging viewpoint matches the imaging viewpoint (within a range of error range), the match percentage in the progress bar becomes 100%. Accordingly, the match-percentage notification unit 1111M of the progress bar (match-percentage indicator 1111) with the bar 1111B.

Then, when the process of authenticity determination produces a result of "genuine", the authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination is "genuine" by displaying a result 1113 on the screen 111A. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. The authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result notification image 1113 which includes a symbol image representing "fake" on the screen 111A.

Figs. 10A to 10C are views which illustrate examples of the match-percentage indicator displayed on the display unit 112 by the match-percentage notification unit 106. In Figs. 10A to 10C , a captured image including an image 1112 of the credit card 300 and the match-level indicator 1121 is displayed on the screen 111A Fig. 1 ) of the authenticity determination device 1. In Figs. 10A to 10C , the match-percentage indicator is displayed as the spirit level 1121 representing a one-dimensional spirit level. As shown in Fig. 10A 1121B in the spirit level 1121M in the spirit level image 1121, the calculated match-percentage is 1121B in H direction.

The match-percentage notification unit 1121T with the increase in the match-percentage, and moves the evaluation bar 1121B farther from the reference value 1121T with a decrease in the match-percentage. Further, the match-percentage notification unit 1121B When the distance is negative, and moves the evaluation bar 1121B When the distance is negative.

The match-percentage notification unit 106 assigns the imaging angle difference Δα and the imaging coordinate value difference. This evaluation formula is a function to be calculated in the level 1121M in Figs. 10A to 10C as a distance between the reference value 1121B and the evaluation bar 1121B, by assigning the imaging angle difference Δα and the imaging coordinate value difference ΔP into variables.

Alternatively, the configuration angle difference Δα and the imaging coordinate value difference ΔP are each used as a dimension, and a two-dimensional evaluation table is written in advance read the match-percentage therefrom. In this configuration, the match-percentage notification unit Δα and the imaging coordinate value difference ΔP.

Fig. 10B shows that the reference value 1121T by a reference area, that is the reference imaging viewpoint matches the imaging viewpoint. The user can visually recognize that the determination of the anti-counterfeiting medium 400 is ready to be performed.

Then, when the process of authenticity determination produces a result of "genuine", the authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination is "genuine" by displaying a result 1113 on the screen 111A. Fig. 10C shows that the result notification image 1113 is displayed. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. The authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result notification image 1113 which includes a symbol image representing "fake" on the screen 111A.

Figs. 11A to 11C are views which illustrate examples of the match-percentage indicator displayed on the screen 112 by the match-percentage notification unit Figs. 11A to 11C , a captured image including an image 1112 of the credit card 300 and a match-percentage indicator (face image) 1131 is displayed on the screen 111A (screen of the display unit 112 in Fig. 1 ) of the authenticity determination device 1. In Figs. 11A to 11C , the match-percentage indicator is displayed as a three-dimensional computer graphics image (hereinafter, face image) representing a human face. In Figs. 11A to 11C , the match-percentage between the reference imaging viewpoint and the imaging viewpoint is indicated in two-dimension by the face image 1131 which corresponds to the horizontal or vertical direction corresponding to the match-percentage. In the present embodiment, for example, a rotation angle in the horizontal direction indicates an evaluation value by the imaging coordinate value difference ΔP, which is a difference between the reference imaging coordinate value and the imaging coordinate value, while a tilt angle in the vertical direction from a horizontal position indicates Δα, which is a difference between the reference angle and the imaging angle. Thus, the match-percentage notification unit 106 is the negative, and the negative is the value of ΔP is negative (-), and rotates the face in the face image 1131 to the right by an amount of rotation angle when the rotation angle is positive (+). Further, the match-percentage notification unit 106 in the face of the angle of view, which is negative, and upwardly tilts the face in the face image 1131 by tilt angle is positive.

The match-percentage notification unit 106 assigns the imaging coordinate value difference ΔP into a first evaluation formula 1131 as the match-percentage. This equation is calculated as the value of ΔP into variables. The first evaluation formula outputs a negative rotation angle when the imaging coordinate value difference ΔP is negative, and outputs a positive rotation angle when the imaging coordinate value difference ΔP is positive. Further, the rotation angle decreases with increase in the match-percentage, indicating an inverse relationship. Further, the match-percentage notification unit 106 assigns the imaging angle difference. This illustration evaluates the difference between the two angles of the equation 1131 as the match-percentage. The second evaluation formula outputs a negative rotation angle when the imaging angle difference Δα is negative, and outputs a positive rotation angle Δα is positive. The rotation angle decreases with an increase in the match percentage.

Alternatively, another configuration is used to calculate the value of the difference. In this configuration, the match-percentage notification unit .DELTA.P is read out as the match-percentage from the first evaluation table. Still another configuration is possible in which the imaging angle difference Δα is used as a dimension, and a one-dimensional second evaluation table is written in advance. In this configuration, the match-percentage notification unit 1131 as the match-percentage from the second evaluation table as an evaluation value corresponding to the obtained imaging angle difference Δα.

Fig. 11B shows the face image 1131 are 0 (or within a predetermined range judged as a match). The user can visually recognize that authenticity determination of the anti-counterfeiting medium 400 is ready for the face image 1131 faces the front as it gazes the user.

Then, when the process of authenticity determination produces a result of "genuine", the authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination is "genuine" by displaying a result 1113 on the screen 111A. Fig. 11C shows that the result notification image 1113 is displayed. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. The authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result notification image 1113 which includes a symbol image representing "fake" on the screen 111A.

Alternatively, instead of the human face image above, a CG of a ball rolling on a table may be displayed while the table is tilted horizontally and vertically. In this case, the user can move the authenticity determination device to the position of a stop at the center of the table.

Alternatively, a cup located on the table may be displayed. The user can move the authenticity determination device 1 to the anti-counterfeiting medium.

Figs. 12A to 12C are views which illustrate examples of the match-percentage indicator displayed on the screen 112 by the match-percentage notification unit Figs. 12A to 12C , a captured image including an image 1112 of the credit card 300, a match-percentage indicator 1141, and a match-percentage indicator 1151 is displayed on the screen 111A (screen of the display unit 112 in Fig. 1 ) of the authenticity determination device 1. In Figs. 12A to 12C , the match-percentage indicators 1141 and 1151 are each displayed as a masking image for the image 1112. As shown in Figs. 12A to 12C 1112 masked by the match-percentage indicator 1141 corresponding to the match-percentage indicator. In the present embodiment, for example, a region masked by the match-percentage indicator 1141 in the horizontal direction indicates an evaluation value by the imaging coordinate value difference ΔP, which is a difference between the reference image coordinate value and the imaging coordinate value, while a region masked by the match-percentage indicator 1151 in the vertical direction indicates an evaluation value by the imaging angle difference Δα, which is a difference between the reference imaging angle and the imaging angle. As the match-percentage between the reference imaging viewpoint and the viewpoint decreases, a region of the image 1112 increases and the match-percentage indicator 1141 increases.

Accordingly, when the evaluation value of the imaging coordinate ΔP is negative (-), the match-percentage notification unit indicator 1141. On the other hand, when the evaluation value of the imaging coordinate value difference ΔP is positive (+), the match-percentage notification unit 1112 corresponding to the match 1141. Further, when the evaluation angle difference Δα is negative (-), the match-percentage notification unit 1112 corresponding to the match-percentage indicator 1151. On the other hand, when the evaluation angle difference Δα is positive (+), the match-percentage notification unit 106 masks an area 1112 corresponding to the match-percentage by the match-percentage indicator 1151.

The match-percentage notification unit 106 assigns the imaging coordinate value difference ΔP into a first evaluation formula 1112. This first evaluation formula is a function for calculating a shift amount of the match-percentage indicator 1141 to be shifted in the horizontal direction as the match-percentage, by assigning the imaging coordinate value difference ΔP into variables. 1141 to the left in the picture 111A to the right in the screen 111A to the left in the screen the screen 111A when the imaging coordinate value difference ΔP is positive. The first evaluation formula calculates the shift amount of the match-percentage indicator 1141 decreases with an increase in the match-percentage. Further, the match-percentage notification unit 106 is the equivalent of percentage. 1151 upward in the screen 111A when the imaging angle difference Δα is negative, and outputs a shift amount to move imaging coordinate value difference ΔP is positive by assigning the imaging angle difference. Further, the second evaluation formula calculates the shift amount.

Alternatively, another configuration is possible advance in the image data storage unit 1141 therefrom. In this configuration, the value of the notification unit 1141 in the horizontal direction as the match-percentage from the first evaluation table as an evaluation value corresponding to the obtained imaging coordinate value difference .DELTA.P. Another configuration is possible in which the imaging angle difference Δα is used as a dimension, and a one-dimensional second evaluation table is written in advance in the image data storage unit 1151 therefrom. In this configuration, the match degree indication unit 1151 (match-percentage indicator) in the vertical direction as the match-percentage from the second evaluation table as an evaluation value corresponding to the obtained imaging angle difference Δα.

Fig. 12B shows that the image 1112 is not masked by the match-percentage indicator 1141 and the match-percentage indicator 1151, that is, the reference imaging viewpoint matches the imaging viewpoint within a range of tolerance. The user can visually recognize the authenticity determination of the anti-counterfeiting medium. 1141 and the match-percentage indicator 1151 is not masked by the match-percentage indicator.

Then, when the process of authenticity determination produces a result of "genuine", the authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination is "genuine" by displaying a result 1113 on the screen 111A. Fig. 12C shows that the result notification image 1113 is displayed. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. Although not shown in the figure, when the process of authenticity determination process produces a result of "fake", the authenticity determination unit 110 notifies the user in an intuitive manner that the authenticity determination result is "fake" by presenting the result 1113 which includes a symbol image representing "fake" on the screen 111A.

Alternatively, instead of the aforementioned match-percentage indicator 1151 and the match-percentage indicator 1151, a CG of a dome having a hole on the top may be displayed in the screen 111A to increase the increase in the frequency of the imaging viewpoint.

Figs. 13A to 13C are views which illustrate examples of the match-percentage indicator displayed on the screen of the display unit 112. In Figs. 13A to 13C , a captured image including an image 1112 of the credit card 300 and a reference density frame 1115 is displayed on the screen 111A (screen of the display unit 112 in FIG Fig. 1 ) of the authenticity determination device 1. In Figs. 13A to 13C to image in the reference density frame 1115 is displayed at a density as captured. On the other hand, on image outside the reference density frame 1115 is displayed at the same time as the reference viewpoint and the imaging viewpoint. As shown in Fig. 13A , the match-percentage notification unit 106 is configured to display the image outside the reference density frame 1115 at a density corresponding to the match-percentage.

The equivalent degree notification unit 106 assigns the imaging angle difference .DELTA..alpha. And the square difference .DELTA.R into an empirical formula. Η (.ltoreq.1) of an image outside the reference density frame 1115. This evaluation formula is a function for calculating a density coefficient multiplied by the gradient of an image outside the reference density frame 1115 in Figs. 13A to 13C , by assigning the difference Δα and the difference ΔR into variables.

Alternatively, another configuration is possible in which the difference in angle Δθ and the difference ΔR are each used as a dimension, and a two-dimensional evaluation table is written in advance , In this configuration the difference Δθ and the square difference .DELTA.R which is the match-value from the evaluation table.

Accordingly, as shown in Fig. 13A , a gradient of each pixel is multiplied by the density coefficient η corresponding to the match-percentage. Thus, a region 1112A of the image 1112 outside the reference density frame 1115 is displayed at a density corresponding to the match-percentage. On the other hand, a region 1112 in the reference density frame 1115 is displayed at a density as captured. The density coefficient is 100%.

Accordingly, the user recognizes the density of the image 1112A in the image 1112 outside the reference density frame 1115 changes as the user moves the authenticity determination device 1. Thus, the user is prompted to move the authenticity determination device 1 to a position where the density of the image 1112A in the image 1112 in the reference density frame 1115

Accordingly, in the present embodiment, the authenticity determination of the anti-counterfeiting medium is ready to be performed. Therefore, the user can visually recognize that the process of authenticity determination is actually in progress, and smoothly perform the process of authenticity determination.

The match-percentage notification unit Δα and the square difference ΔR, and multiplies the gradient of each pixel with the density coefficient η which has been read each time a new match-percentage is obtained. Thus, the match-percentage notification unit 106 updates the display of the region 1112A. Fig. 13B shows that the region 1112B is displayed at the same time as the region of view. The user can visually recognize that authenticity determination of the anti-counterfeiting medium 400 is ready to be performed when the region 1112A is displayed at the same density as that of the region 1112B.

Fig. 13C where authenticity determination of the anti-counterfeiting medium makes a determination of "genuine".

When the process of authenticity determination produces a result of "genuine", the authenticity determination unit 110 in the intuitive manner that the authenticity determination result is "genuine" by displaying a result 1113 on the screen 111A. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. The authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result notification image 1113 which includes a symbol image representing "fake" on the screen 111A.

Referring back to Fig. 1 , the match-percentage notification unit 106 outputs imaging command signal to the imaging unit 101 via the imaging control unit 102

The imaging unit 101 performs imaging process to write and store the data in the image data storage unit 113.

The available image selecting unit 107 is also available for use in the authenticity determination process. Performing process analysis as well as the entire shape of the anti-counterfeiting medium 400 is in the captured image data, the anti-counterfeiting medium 400 is in focus, and luminance histogram is distributed (described later).

When the image of the image is detected, it is detected in the process of determining the data. The available image selection unit 107 adds data to the image data collection into the image data storage unit for authenticity determination in the image data storage unit 113.

Fig. 14 is an illustration of the concept of data collection in the image data storage unit 113. In the image data table for authenticity determination shown in FIG Fig. 14 , pieces of image information, information of the image data Indicated by the image of the data of the data collection, the image of the information and the image of the image data, which are correlated to each other, are written and stored.

In this image it is used for authentication in the authenticity determination process. The captured image data identification information. 113. The reference. The reference image data storage unit 113. The reference image data storage unit 113 and serves as an index of the image data image data stored in the image data address is image data for comparison. The degree of similarity is a numerical value representing a similarity between the image data and the reference image data.

Referring back to Fig. 1 The reference image data collection unit 108 generates the reference image. The image data collection unit 107. The reference data image is viewed from the same observation angle image data obtained from the anti-counterfeiting medium 400. As described above, the anti-counterfeiting medium 400 may have a configuration formed of diffraction gratings or holograms, an OVD ink or pigmented pigment containing a pigment in which mica is coated with metal oxide, forming a laminate of different refractive indexes, or a cholesteric liquid crystal.

Accordingly, the reference image generates data in accordance with each of the above configurations. For example, in the case where the anti-counterfeiting medium 400 is formed using the diffraction grating, the reference image data is calculated and generated by simulation using a reference image generation function, which takes the observation angle as a parameter, based on diffraction grating design information. In the image data storage unit 113, the sets of data are written in the image data storage unit 113, and the data is written to the data in the image data address. The reference image generation unit 108 The data-storage unit for the collection of data from the data-collection unit 113 is located in the data-collection unit 113 ,

In some cases such as where OVD ink or pearl pigment is used, layers having different refractive indexes are not laminated, or cholesteric liquid crystal is used, can not be calculated using a function of the image data. In such cases, the anti-counterfeiting medium 400 is imaged at every observation angle so that the image data is stored there as a data-base 113. Thus, the reference image generation unit 108 can read the data collection image of the image data collection image of the image data collection image of the data collection image of the data collection The captured image data to be compared.

The similarity calculation unit 109 data collection and data collection unit 113, and sequentially reads the image data collection information and the reference image data address corresponding to the determination image. Then, the similarity calculation unit 109 The data is read from the image image image image data address image data address image data storage unit 113.

The similarity calculation unit 109 calculates a degree of similarity image image data to read out, by using template matching. For example, the similarity calculation unit 109 calculates a mean square error in the luminance of each pixel (each of RGB (red, green, and blue) if a color image is used). accumulates the mean square error, and outputs the additional result as a numerical value. The lower the numerical value of similarity, the higher the similarity between the image data and the reference image data. The image of the pixel is in a different color. It is used in the reference image data.

Alternatively, the similarity calculation unit 109 Euclidean distance of the image color space, and output the addition as the numerical value indicative of the degree of similarity. As with the case of the mean square error, the lower the numerical value of the similarity, the higher the similarity between the image data and the reference image data.

As illustrated above, the similarity calculation unit 109 image of the image of the image in the image of the human being image data storage unit 113. The similarity calculation unit 109 The data from which the image of the data collection unit is calculated table for authenticity determination in the image data storage unit 113.

Further, in the case where the intensity of the illumination is not the same as that of the light image.

For this reason, evaluation can be based on the color tone of RGB between consecutive pixels. That is, a difference in the mean square error between R / G between pixels in the image data and R / G between pixels in the image pixels of the image and image of a light bulb in the background. The R / G is calculated as a ratio of two pixels, a pixel A and a pixel B, as a ratio where the gradient of R of the pixel / G but also B / G (a ratio between the gradient of B and the gradient of G) may also be used in combination. The additional pixels are described in advance as a combination of pixels in a large R / G or B / G.

The information is given in the same way as it is used in the data collection process image data table for authenticity determination. Then, the authenticity determination unit 110 compares each of the similarities corresponding to the determination image. The similarity of the image obtained at a certain imaging point (within a range of reference imaging viewpoint) and the reference image data obtained corresponding to the reference image is the calculated image data and the image data is the same as the experimental value. The similarity thresholds are different, and the authenticity determination unit 110 performs an authenticity determination process for the anti-counterfeiting medium using the similarity threshold.

The authenticity determination unit 110 is a non-authentic image. The authenticity determination unit 300 is a non-authentic product) if the degree of similarity to the image data is not less than the similarity threshold.

Further, the authenticity determination unit 110, which determines the credit card 300 (object for authenticity determination) to which the anti-counterfeiting medium 400 is attached as genuine (to authentic product) if all the similarities are less than the similarity threshold.

Moreover, the imaging control unit 102 when capturing images satisfies imaging conditions for capturing image data.

The imaging conditions include, if necessary, presence or absence of an illumination or intensity of the illumination as an exposure condition.

The imaging control unit 102 generates, as an imaging condition, a luminance histogram the image is not biased to a high gradient region or a low gradient region. For example, when the gradient distribution in the luminance histogram is biased to the low gradient region, that is, when the pixels are at the gradient near 0 in the captured image data while the gradient is expressed by 256 tones ranging from 0 to 255 The results of this comparison with the reference image data can not be performed. On the other hand, when the gradient in the luminance histogram is focused on the high gradient region, that is, when the image is at the edge of the image with the reference image data can not be performed.

Therefore, the exposure condition is required to be distributed in the luminance histogram to be present in the median of the gradient ranging from 0 to 255.

The imaging control unit 102 has the brightness required to be adjusted on the basis of the gradient distribution of the luminance histogram. The anti-counterfeiting medium 400 by the lighting unit 104 with a background intensity during imaging (for example, by irradiating flash light in the imaging direction). Further, when the authenticity determination device 103 and the lighting unit 104, the imaging control unit 102 displays prompting the user to irradiate illumination with necessary light intensity to the anti-counterfeiting medium 400 on the screen of the display unit 112.

On the other hand, the lighting unit is in the process of being in the shade does not illuminate the anti-counterfeiting medium 400, or can illuminate the anti-counterfeiting medium 400 with a prioritized exposure during imaging. Further, the imaging control unit 102 displays the intensity of the anti-counterfeiting medium 400 on the screen of the display unit 112 in order to irradiate illumination 400th

In the above-described processes, an exposure control table, which includes distributions of luminance histogram and control conditions. The exposure control table may be written and stored in the image data storage unit 113 in advance. In this case, the imaging control unit searches as the exposure The condition and the illumination of the display unit 112 as described above.

Further, at illuminance sensor may also be provided for the exposure control unit 103, and the exposure condition and the degree may be determined by the illuminance sensor. Here, at exposure control table, which includes illuminances and control conditions corresponding to the illuminances, may be prepared. The exposure control table may be written and stored in the image data storage unit 113 in advance. In this case, the imaging control unit 113 searches for correlation with the illuminance in capturing the image data to read the information on the control condition as shown above.

In the image data storage unit 113, the above-described captured image data, reference image data, captured image data and image data for authenticity determination are written and stored.

The display unit 112 is configured of, for example, a liquid crystal display, and display images on the screen thereof.

Fig. 15 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the first embodiment. In the present embodiment, it is assumed that the anti-counterfeiting medium 400 is imaged on video mode.

Step S1:

The imaging control unit 102 detects current imaging conditions.

Step S2:

The imaging control unit 102 [0008] The imaging control unit 102 has the same meaning as it is used in a diagnostic system.

Proceeds from the process of step S3. The process to step S4. On the other hand.

Step S3:

When calculating the imaging angle of the imaging unit 101 at the imaging viewpoint, the observation angle estimation unit 105 at the imaging point 101 of the imaging unit 101 at the imaging viewpoint from the captured image data. Further, the observation angle estimation unit 101 in the three-dimensional coordinate system and the imaging coordinate The value of the imaging unit 101, and the imaging angle of the imaging unit 101 are each as defined.

The match-percentage notification unit 106 displays a match-on-display indicator 111A, prompting the user to move to the authenticity determination device 101 matches with the reference imaging viewpoint to the authenticity determination device 1.

Then, the match-percentage notification unit 106, when determining that the imaging viewpoint matches with the reference imaging viewpoint, outputs an imaging command signal to the imaging control unit 102.

Step S4:

The imaging control unit 102 displays unsatisfied imaging conditions on the screen of the display unit 112 to prompt the user to adjust the unsatisfied imaging conditions, and proceeds to the process to step S1.

Step S5:

The imaging control unit 102 causes the imaging unit 101 to perform imaging process to obtain the image of the anti-counterfeiting medium 400. In the case of imaging, the imaging control unit 102 extracts video frames at the imaging viewpoint that matches the reference imaging viewpoint as captured image data. In video mode, the process of extracting frames to the process of capturing image data.

Step S6:

The Imaging Control Unit 102 Adding the image to the image data and writing the data is stored in the image data storage unit image data storage unit 113 in which the image data is written.

Fig. 16 is a flowchart that details a process of imaging viewpoint guidance for an imaging device at step S3 in the flowchart shown in FIG Fig. 15 , In which the match-percentage indicator in Figs. 9A to 9C is displayed on the screen 111A.

Step S301:

The observation angle estimation unit 105 calculates a coordinate position of the anti-counterfeiting medium 400 in the three-dimensional coordinate system.

Step S302:

The match-percentage notification unit 106 calculates the reference imaging angle (reference imaging angle and reference, coordinate value) of the reference image data, which is a relative position to the coordinate position of the anti-counterfeiting medium 400, into an absolute position correlated to the three-dimensional coordinate system calculated by the observation angle estimation unit 105.

Step S303:

The observation angle estimation unit 105 in the three-dimensional coordinate system.

Step S304:

The match-percentage notification unit 106 calculates a difference between the reference and coordinate values.

Step S305:

The match-percentage notification unit 106 calculates a square difference ΔR as a coordinate evaluation value ΔP obtained as above.

Step S306:

The observation angle estimation unit 105 calculates at the imaging angle of the imaging unit 101 in the three-dimensional coordinate system.

Step S307:

The match-percentage notification unit 106 calculates a difference between the reference imaging angle and the imaging angle.

Step S308:

The match-percentage notification unit 106 reads the match-point correlated to the difference ΔR and the imaging angle difference Δα from the evaluation table.

Step S309:

The match-percentage notification unit 106 displays the match-value obtained on the screen 111A as shown in Fig. 9A ,

Step S310:

The match-percentage notification unit 106

If the imaging viewpoint matches with the reference imaging viewpoint, the match-percentage notification unit 106 terminates the procedure (proceeds to the process to step S5 in Fig. 15 ). On the other hand, if the imaging viewpoint does not match the reference imaging viewpoint, the match-percentage notification unit.

Fig. 17 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the first embodiment.

Step S21:

The available image unit 107 captures the unprocessed captured image data in the image data storage unit 113.

If the unprocessed image data image, the available image selecting unit 107 proceeds to the process to step S22. Repeat step S21. On the other hand, on the other hand.

Step S22:

The image is read from the captured image.

The available image selection unit 107 The image data storage unit 113 is used for the data collection unit.

Step S23:

The available image selecting unit 107 mit dem Referenz image Daten.

The available image of the anti-counterfeiting medium is provided in the captured image data, whether the anti-counterfeiting medium is in focus or not. The available image image is also available for comparison with the reference image data, and proceeds to the process to step S24.

Step S24:

Adding image data to the image data collection image. The available image selecting unit 107 writes and stores the image image information data, together with the determination image in the image data storage unit 113.

Step S25:

107 returns the process to step S21 and again obtains the captured image data.

Here, the available image selecting unit 107, the display unit 112, suggesting the current imaging viewpoint and image, the anti-counterfeiting medium 400 having appropriate focus and distribution of luminance histogram. 400 is being in progress and further information on the anti-counterfeiting medium 400 is required to advance the authenticity determination process.

Step S26:

Based on the image of the image obtained by the acquisition of the image of the image. The reference image generation unit 108 writes to the data storage unit 113, and writes to it.

Step S27:

The similarity calculation unit 109 reads the captured image data identification information to which image of the data storage unit 113. Then, the similarity calculation unit 109 reads, from the image data storage in the image data storage unit 113, a captured image data address which has been read. The similarity calculation unit 109 reads from the image data storage unit 113, image data has been read. Further, the similarity calculation unit 109 by the image of the data carrier for data collection.

The similarity calculation unit 109 calculates the degree of similarity in the image data to the image data by using template matching. The similarity calculation unit 109 for the collection of data. The data collection unit 113 for authenticity determination.

Step S28:

The authenticity determination unit 110 reads from the image data storage unit 113, the image data collection unit 113 has the same value and has the same degree of similarity read is less than the closest similarity threshold.

Then, the authenticity determination unit 110 is given the same value as the image of the detected image. When the degree of similarity is detected, the authenticity determination unit 110 determines that the anti-counterfeiting medium is genuine and thus the authenticity is authentic object, and proceeds to the process to step S29. On the other hand, when the identity is determined, the authenticity determination unit 110 determines that the anti-counterfeiting medium is fake and thus the authenticity determination object is fake (a non-authentic product), and proceeds to the process to step S30.

Step S29:

The authenticity determination unit 110 indicates that the authenticity determination object is an authentic product (for example, see Fig. 9C ). Then, the authenticity determination device 1 terminates the authenticity determination process for the authenticity determination object.

Step S30:

The authenticity determination unit 110 indicates that the authenticity determination object is a non-authentic product. Then, the authenticity determination device 1 terminates the authenticity determination process for the authenticity determination object.

According to the embodiment of the present invention, the subject matter of the communication is represented by the imaging device viewpoint and the imaging viewpoint increase or decrease. The match-percentage indicator indicates the match-percentage of the imaging viewpoint to the reference imaging viewpoint. Thus, according to the embodiment, the user can intuitively recognize by the progress indicator.

Further, the image of the anti-counterfeiting medium is captured by the anti-counterfeiting image medium is genuine or fake. Authenticity determination of the anti-counterfeiting medium (genuine or fake) can be carried out by an anti-counterfeiting medium (genuine or fake). counterfeiting medium with a simple capturing device image as a general purpose digital camera.

As a technique of progress notification, the message is displayed in the display-percentage notification unit in authenticity determination.

However, the above progress bar is only an example and the match-percentage notification unit Figs. 10A to 10C . 11A to 11C . 12A to 12C , and 13A to 13C on the screen 111 as the match-indicator does not indicate the degree of progress of authenticity determination.

<Second Embodiment>

Hereinafter, with reference to the drawings, a second embodiment of the invention will be described.

Fig. 18 is a block diagram which illustrates a configuration example of an Identification device according to a second embodiment. In Fig. 18 An authenticity determination device 1A includes an imaging unit 101, an imaging control unit 102, an exposure control unit 103, an illumination unit 104, an observation angle estimation unit 105, a match-percentage notification unit 106, an available image selecting unit 107 A reference image generation unit 108, a similarity calculation unit 109, an authenticity determination unit 110, a progress notification unit 111, a display unit 112, and an image data storage unit 113. In the identification device according to the first embodiment, the imaging unit 101 and the illumination unit 104 are isolated and provide evidence of retroreflective anti-counterfeiting media. The same elements as those of the first embodiment in Fig. 1 are denoted by the same reference characters, and only those of the first embodiment will be described below.

In the authenticity determination device 1A according to the second embodiment, the progress notification unit is provided in addition to the configuration of the first embodiment.

Each time a piece of information is determined from the authenticity determination unit 110, the progress notification unit. Then, the progress notification unit 111 calculates the degree of progress by dividing the number of pieces of information by a specified number.

In the case where the reference imaging viewpoints are set forth for a plurality of specified positions, a guiding process is performed for the user. The image data are captured at each imaging viewpoint, and authenticity determination is performed.

Further, each piece of determination information is supplied from the authenticity determination unit 110, the progress notification unit 111 integrates the supplied piece of information to determine the number of pieces of information. Then, the progress notification unit 111 calculates the degree of progress by dividing the number of pieces of information by a specified number. When you are ready, the progress notification unit will display the status of progress.

The present image selecting unit 107 with the already-obtained reference imaging viewpoint. The number of reference imaging points is set in advance, which is the reliability level of the authenticity determination. The imaging angle and the imaging coordinate value at which the image data is used for authenticity determination is advance. If the captured image data matches with the already-obtained reference image viewpoint, the available image image is selected. On the other hand 107 to generate the image of a reference image.

The authenticity determination unit 110 is a fake (non-authentic product) image the degree of similarity data to the reference image data is not less than the similarity threshold. Further, the authenticity determination unit 110, which determines the credit card 300 (object for authenticity determination) to which the anti-counterfeiting medium 400 is attached as genuine (to authentic product) if all the similarities are less than the similarity threshold.

Here, each time the image is taken at the imaging point of view, the authenticity determination unit of the authenticity determination unit of the authenticity determination unit of the anti-counterfeiting medium 400 has made a determination of "genuine "to the progress notification unit 111.

Figs. 19A to 19C are views which illustrate examples of the match-percentage indicator and the progress indicator displayed on the screen 112 by the match-percentage notification unit 106 and the progress notification unit 111. In Figs. 19A to 19C a capture image including an image 1112 of the credit card 300, a match-percentage indicator 1111, and a progress indicator 2111 is displayed on the screen 111A Fig. 1 ) of the authenticity determination device 1.

In Figs. 19A to 19C , a progress bar is used as the match-percentage indicator 1111 and the progress indicator 2111. Since the match-percentage indicator 1111 is the same as shown in Figs. 9A to 9C , the description thereof is omitted. As shown in Figs. 19A and 19B , a progress meter 2111B fills the area corresponding to the percentage of calculated degree of progress. Accordingly, in the present embodiment, the user can easily recognize the progress of authenticity. Therefore, the user can visually recognize that the process of authenticity determination is actually in progress, and smoothly perform the process of authenticity determination.

2111M each time a new degree of progress is made is obtained.

Fig. 19C where authenticity determination of the anti-counterfeiting medium makes a determination of "genuine".

When the authenticity determination process produces a result of "genuine", the degree of progress becomes 100%. Accordingly, the progress notification unit 111 fills the entire progress meter 2111M of progress bar (progress indicator 2111) with the bar 2111B. Further, the authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination is "genuine" by displaying a result 1113 on the screen 111A. For example, when the process of authenticity determination produces a result of "genuine", the result of notification image 1113A represents "genuine" to visually indicate the result of authenticity determination. Although not shown in the figure, when the process of authenticity determination process results in "fake", the progress notification unit 1111B in the progress meter 1111M of the progress bar. The authenticity determination unit 110 does not authenticate the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result 1113 which includes a symbol image representing "fake" on the screen 111A.

Fig. 20 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification system according to the second embodiment. In Fig. 20 , the same steps as those of Fig. 17 are denoted by the same step, and the description is omitted. The following description will be made on step S28 through step 28D.

Step S28:

The authenticity determination unit 110 sequentially reads, from the image data collection unit 113, to the image data storage unit 113, the image data from which has been analyzed been read is less than the corresponding similarity threshold.

Then, the authenticity determination unit 110 is given the same value as the image of the detected image. Determining that the anti-counterfeiting medium is genuine and thus the authenticity determination object is genuine (an authentic product), and proceeds to the process to step S28A. On the other hand, when the identity is determined, the authenticity determination unit 110 determines that the anti-counterfeiting medium is fake and thus the authenticity determination object is fake (a non-authentic product), and proceeds to the process to step S30.

Step S28A:

The authenticity determination unit 110, when determining that the anti-counterfeiting medium is genuine, outputs the information to the progress notification unit 111, instructing the process of obtaining information.

The progress notification unit 111 increments the number of pieces of information (adds 1) authenticity determination unit 110 to present the integrated value.

Then, the progress notification unit 111.

Step S28B:

The progress notification unit 111 of the display unit 112 (for example, the progress indicator 2111 shown in Figs. 19A to 19C ) to notify the user of the degree of progress.

Step S28C:

The progress notification unit 111 whether determines whether reaches reaches reaches reaches reaches reaches reaches reaches reaches reaches reaches reaches reaches. When it reaches the specified number, the progress notification unit 110, and proceeds to the process to step S28D.

On the other hand, the number of pieces of information in the process of becoming S25.

Step S28D:

The authenticity determination unit 110 exceeds a definite "determination" threshold. The authenticity determination unit is the degree of progress that is not more than the "genuine" determination threshold.

With this configuration of the present embodiment, the progress notification unit 111 112. Accordingly, the user can intuitively recognize the stage of authenticity determination is proceeding as he moves the authenticity determination device 1 from the changes in the progress indicator. Accordingly, the determination and performance of the anti-counterfeiting medium is as follows. The process of authenticity determination is proceeding.

As a technique of progress notification in authenticity, in the present embodiment, an indicator of progress is displayed determination.

However, the progress notification unit 111 may also be used to indicate the progress of an authentication process ,

Alternatively, the progress indicator is displayed on the screen. The progress indicator may be used as an image of any shape.

Further, the progress indicator is displayed on the screen of the display unit 112. In this case, the final shape may be displayed when the authenticity determination is completed as genuine, and a broken shape may be displayed when the authenticity determination is completed as a fake (a non-authentic product). The progress indicator may not be the final shape. For example, it may be displayed. In this case, when the authenticity determination is completed as genuine (an authentic product), an image associated with a matured state or the determination as genuine (for example, an image of an angle) may be displayed. Further, when the authenticity determination is completed as fake (a non-authentic product), at image associated with an initial shape before growing starts or the determination as fake (for example, an image of a demon or devil) may be displayed.

Further, the progress indicator displayed on the screen of the display unit 112 may thus be reduced to 0% to 100%, which indicates the end of determination. In this case, the progress indicator may not necessarily be the end of authenticity determination. For example, in image of numerical character that indicates the changes in level or stage may be displayed.

In addition, the display unit 112 may also display an image of characters or objects such as sun, light, animal, and structure displayed in a region. The progress notification unit is the process of increasing the frequency of the lighting and lighting of the building can recognize the degree of progress from the flashing state of the display.

Alternatively, the progress indicator appears on the screen as the authenticity determination product), and a cross mark is displayed when the authenticity determination is completed as a fake (a non-authentic product).

Alternatively, the image of the anti-counterfeiting medium 112 may have a momentum that changes from low to high intensity corresponding to the stage of progress of authenticity determination. In the image of the anti-counterfeiting medium, the image of the anti-counterfeiting medium is displayed same luminance as that of the anti-counterfeiting medium 400 when it is imaged in the captured image, corresponding to the change in the degree of authenticity determination.

Alternatively, in place of the aforementioned progress indicator, a vibrator of mobile terminals or smartphones may be used. For example, the progress notification unit may or may not function as a vibrator in a mobile terminal or smart phone of the authenticity determination proceeds.

Alternatively, the progress notification unit may be used as the output of a mobile terminal or as a mobile terminal thereby notify the degree of progress in an intuitive manner as the stage of authenticity determination.

Alternatively, the progress notification unit may be referred to as the scale of do, re, mi, fa, so, la, ti, and do, from a speaker or audio terminal of mobile terminals or smartphones so it moves to a scale of higher frequency as the stage of the authenticity determination proceeds. In this case, change in the degree of progress may also be notified when the authenticity determination process produces a result of "genuine" or by simply enhancing the frequency of a tone.

<Third Embodiment>

Hereinafter, with reference to the drawings, a third embodiment of the invention will be described.

An identification device of the second embodiment is shown in FIG Fig. 18 , In the second embodiment, the authenticity determination process is also performed. In the third embodiment, however, the authenticity determination process is performed in authenticity determination. Here, each of them has a different observation angle. The imaging process is performed in the same manner as the second embodiment shown in the flowcharts of Figs. 15 . 16 , and 20 ,

Fig. 21 The invention relates to an authenticity determination process using an anti-counterfeiting medium in the identification device according to the third embodiment.

Steps S21 to S27, S28 to S30, and S33 onward are similar to the flow chart in the second embodiment shown in FIG Fig. 17 , Hereinafter, the description will only be given by way of example.

Step S24A (S28D):

The progress notification unit 111 to obtain the imaging viewpoint.

The progress notification unit 111 (The number of imaging points of view and the specified number). to calculate the degree of progress.

Step S24B (28E):

The progress notification unit 111 (for example, the progress indicator 2111 shown in Figs. 19A to 19C ) to notify the user of the degree of progress.

The viewpoint viewpoints in advance with the state of the art , Accordingly, the user can intuitively recognize how he / she is doing it. Accordingly, the determination and performance of the anti-counterfeiting medium is as follows. The process of authenticity determination is proceeding.

<Fourth Embodiment>

Hereinafter, with reference to the drawings, a fourth embodiment of the invention will be described.

Fig. 22 is a block diagram which illustrates a configuration example of an identification device according to a fourth embodiment. In Fig. 22 The authenticity determination device 1B includes an imaging control unit 102, an observation angle estimation unit 105, an available image selecting unit 107, a reference image generation unit 108, a similarity calculation unit 109, to authenticity determination unit 110, to display unit 112, and to image data storage unit 113. Further, the imaging device 2 includes imaging unit 101, exposure control unit 103, and illumination unit 104. In Fig. 22 , the same elements as those of the first embodiment are denoted by the same reference characters.

From the authenticity determination device 1B in the present embodiment. With this configuration, general purpose digital cameras or mobile terminals (including mobile phones and smartphones) can be used as imaging devices to capture the image data for authenticity determination.

Further, the authenticity determination device may as well as communicate with digital cameras or mobile terminals, which are not shown, via an information communication network such as internet. The authenticity determination device 1B may be configured to perform the process of authenticity determination of the anti-counterfeiting medium by using the digital camera or mobile terminals as well as the aforementioned first to third person.

<Fifth Embodiment>

Hunderafter, with reference to the drawings, a fifth embodiment of the present invention will be described. In some cases, however, the anti -counterfeiting medium may as shown in Fig. 3 to be transmitted (for example, transmission hologram) and the image of the transmitted light is used for authenticity determination. In this case, the illumination needs to be at the position where it is transmitted through the anti-counterfeiting medium. Accordingly, as with the case of the fourth embodiment of the invention, the illumination unit 104 needs to be isolated from the imaging device 2 or the authenticity determination device 1.

Fig. 23 is a block diagram which illustrates a configuration example of an identification device according to a fifth embodiment. In Fig. 23 The illumination device 104 is isolated from the authenticity determination device 1B and the imaging device 2A. Accordingly, as shown in Fig. 3 , imaging light from the illumination device 3 (light source 200) is incident on the anti-counterfeiting medium 400 at an irradiation angle β. As the imaging light is incident, the anti-counterfeiting medium 400 emits a predicted pattern of light. As described above, the pattern of light is different depending on the observation angle α. Further, the pattern of light emitted from the anti-counterfeiting medium.

As described above, in the case where the anti-counterfeiting medium has characteristics of transmission, not only the angle of observation, but also the angle of irradiation of the lighting device 3 to the anti-counterfeiting medium 400 in capturing an image for authenticity determination needs to be adjusted so that the irradiation angle is 400 during a simulation corresponding to the structure of the anti-counterfeiting medium 400 for obtaining the reference image data or in capturing image data in advance.

The authenticity determination device 1A includes an imaging control unit 102, an observation angle estimation unit 105, an available image selecting device unit 107, a reference image generation unit 108, a similarity calculation unit 109, an authenticity determination unit 110, a display unit 112, and an image data storage unit 113. The authenticity determination process is the same as that in the first embodiment and the second embodiment.

Further, the imaging device 2 includes an imaging unit 101 and an exposure control unit 103. In Fig. 23 , the same elements as those of the first embodiment are denoted by the same reference characters. The illumination device 3, as with the illumination unit 104, is not limited to general illumination, which is continuously irradiated to an imaging target with light short period of time. The illumination device 3 irradiates, in response to the light emission instruction from the exposure control unit 103, the imaging target with a definite intensity of light.

According to the anti-counterfeiting medium image of the anti-counterfeiting medium, the anti-counterfeiting medium is detected genuine or fake. Without using a conventional special authentication device, and without relying on the disposition condition of the anti-counterfeiting medium, authenticity determination of the anti-counterfeiting medium (genuine or fake) may be performed by capturing an anti-counterfeiting medium with a simple image capturing device.

Further, according to the illumination device of the invention, it is possible to capture the image anti-counterfeiting medium having different patterns of transmitted light depending upon the illumination of the illumination device 3 transmits through the anti-counterfeiting medium.

<Sixth Embodiment>

Hereinafter, with reference to the drawings, a sixth embodiment of the invention will be described.

Fig. 24 is a block diagram which illustrates a configuration example of an identification device (authenticity determination device) according to a third embodiment. In Fig. 24 to authenticity determination device 3101, to imaging unit 3101, to imaging control unit 3102, to exposure control unit 3103, to illumination unit 3104, to observation angle estimation unit 3105, to available image selecting unit 3106, a reference image generation unit 3107, a similarity calculation unit 3108, an authenticity determination unit 3109, a progress notification unit 3110, a display unit 3111, and an image data storage unit 3112. In the identification device according to the sixth embodiment, the imaging unit 3101 and the illumination unit 3104 Determination of retroreflective anti-counterfeiting media.

The imaging unit 3101 may include a CCD (charge coupled device) or a CMOS (complementary metal oxide semiconductor) image sensor. The imaging unit 3101 is configured to capture image data in the image data storage unit 3113.

The imaging control unit 3101 controls the imaging unit 3101, including a level of focus on and imaging element sensitivity (IMO) when the imaging unit 3101 captures image data, which is an image of a light pattern (color of light (wavelength) or an image of letters or pictures) emitted from the anti-counterfeiting medium in response to the incident light.

The exposure control unit 3101 controls the imaging unit 3101 in exposure, including a shutter speed, at aperture value, and the presence or absence of illumination light and illumination light intensity. Moreover, the exposure control unit 3104 to emit imaging light (illumination light) as required is shown in the image of the anti-counterfeiting medium to be imaged by the authenticity determination device 3,001th

The illumination unit 3104 is not limited to general illumination which continuously irradiates an imaging target with light, but may be a light emission device called an electronic flash or strob (registered trademark) which irradiates the imaging target with light for a short period of time , The illumination unit 3104 irradiates the imaging device 3103. The illumination unit 3103 irradiates the imaging device 3103 Accordingly, in response to the imaging control unit 3102, the exposure control unit 3103 outputs a light emission instruction to the illumination unit 3104 to emit illumination light for the anti-counterfeiting medium as described above.

The observation angle estimation unit 3105 is configured to calculate an imaging viewpoint from a coordinate conversion equation (described later). The imaging viewpoint is information including an observation position (coordinate value), which is a position at which the image data of the anti-counterfeiting medium are captured in a three-dimensional space and at imaging direction of the imaging unit 3101. That is, the observation angle estimation unit 3105 calculates the observation angle of the anti-counterfeiting medium in each captured image data from the obtained imaging viewpoint (observation position and imaging direction).

The observation angle estimation unit 310 in the form of an image, in a captured image This observation angle causes a difference in the pattern of observed light when emitted from the anti-counterfeiting medium in response to the incident light.

The anti-counterfeiting medium is imaged by the imaging unit 3101 with a predetermined focal length. In capturing multiple pieces of the image data, the image data needs to be captured with different observation angles among the pieces of the image data. Image of the anti-counterfeiting medium in the three-dimensional space by using a predeterminable particle conversion equation as described above.

The coordinate conversion equation is used in the manner in which a pixel position in the two-dimensional coordinate in the three-dimensional space is correlated to each other -dimensional space is reproduced from multiple pieces of the image image data (in the advance as a pre-process for authenticity determination) of the anti-counterfeiting agent provided in an authenticity determination object. The pre-generated coordinate conversion equation 3112 in advance for the authenticity determination object or for each authenticity determination object.

Fig. 25 is a diagram illustration of a captured image data storage unit 3112. In the captured image data table shown in FIG Fig. 25 Information pieces are written and stored in the form of an image. The captured image data identification information.

Where the authenticity determination object is placed in a coordinate. The observation angle is, for example, at an angle formed between the imaging direction of the imaging unit 3101 when capturing the image data and the line normal to the surface of the anti-counterfeiting medium system of a three-dimensional coordinate system with the originating at any one of vertices or coordinate points of the authenticity determination object. The observation position at which the imaging unit 3101 captures an image of the authenticity determination object in the three-dimensional space. Image data stored in the image data storage unit 3112 and serves as an index of image data when it is read out.

Fig. 26 is a diagram which illustrates the observation angle of the imaging unit 3101 relative to the anti-counterfeiting medium. In Fig. 26 , the anti-counterfeiting medium 3400 is used for preventing and copying banknotes, stock certificates, and notes such as gift voucher, food products and high-class brand products. The anti-counterfeiting medium 3400 is directly printed or copied onto the securities or securities thereof, or printed on or attached to a product or package of products.

In Fig. 26 , the anti-counterfeiting medium 3400 is provided on the surface of a credit card 3300. Examples of the anti-counterfeiting medium 3400 include a diffraction grating or a hologram having color or pattern changes depending on the observation angle, and may be formed using optically variable device (OVD) ink or a color pigment having color or brightness changes depending on the observation angle. A light source 3200A and a normal line 3350. With the supply of the imaging light, the anti-counterfeiting agent emits light of a predictive pattern. The light pattern emitted from the anti-counterfeiting medium in response to the irradiation light depends on the observation angle α and the irradiation angle β.

The anti-counterfeiting medium 3400 will be detailed below.

The anti-counterfeiting medium 3400 may be a hologram or the like, which emits various types of diffracted light according to the diffraction structure. In this case, various types of holograms such as reflection, transmission, phase, and volume holograms can be used.

Having the following description will be made on the example of relief structure having uneven structure.

Methods for forming uneven structures 3310 and a second structure 3320 which are formed in a relief structure forming layer 3302 as shown in Figs. 27 and 28 include various techniques such as radiation curable molding, extrusion molding and thermal molding using a metal stamper or the like.

The first uneven structure 3310 having a groove-shaped structure including bumps and recesses, may have an uneven structure as a relief diffraction grating structure or a directional scattering structure having a plurality of regions in which a linear-shaped bumps and recesses are arrayed in the same direction.

In general, most diffraction gratings typically used for displays have spatial frequencies in the range from 500 to 1600 / mm, so that different colors can be applied to the spatial frequency or the direction of the diffraction grating.

On the other hand, the directional scattering structure shown in Fig. 31 has a constant orientation direction 3332 in a particular segment or cell. The light scattering structures 3331 are each in a straight line, and arrayed substantially parallel to each other in a particular segment or cell.

The light scattering structures 3331 may intersect with each other in a longitudinal direction of some of the light scattering structures 3331 and a longitudinal direction of other ones in the light scattering structures of the directional scattering structure 3330 have scattering ability with sufficient anisotropy.

According to the above structure, when the region of the directional scattering structure is 3330, the region appears relatively bright due to the high scattering ability.

On the other hand, when the region including the directional scattering structure 3333, the region appears relatively dark due to low scattering ability.

Accordingly, in the segment or cell including the light scattering structures 3331, any orientation direction 3332 may be determined in each segment or cell to provide a pattern of relatively bright and dark parts, and reversing light and dark parts is observed by changing the position of observation or light irradiation position.

The above first underneath structure 3310 can be formed of, but not limited to, a single or composite structure of the above relief diffraction grating structure or directional scattering structure.

Further, Fig. 29 shows a perspective view of an exterior of a structure 3320.

The second uneven structure 3320 shown in Fig. 29 includes a Bumps 3321.
Although the second uneven structure 3320 is formed by the bumps 3321, this is only an example. The second embodiment of the present invention is therefore to be considered as a "one of a kind".

Each recess or bump on the second structure 3320 has a surface area 1.5 times larger than the footprint required for each recess or bump when disposed on the surface of the relief structure forming layer 3302.

1.5 times larger than the footprint, favorable low reflectivity and low scattering properties can be obtained. This is because of the second-in-the-line structure 331 exhibits on the other hand, when it comes to the surface of each recess or bump less than 1.5 times the footprint, the reflectivity is increased, which is not favorable.

Further, the paralysis of bumps or recesses in the second uneven structure 3320 formed in the relief structure.

The forward tapered shape is a cross-sectional area of the bumps or recesses, measured parallel to the substrate surface, decreasing from the proximal end to the distal end of the bumps or recesses. More specifically, the forward tapered shape may be conical, pyramidal, elliptical, columnar or cylindrical, prismatic or rectangular cylindrical, truncated conical, truncated pyramid, or truncated elliptical shapes, a shape where cone is adjoined to a column or cylinder, or a shape where a pyramid is adjoined to a prism or rectangle, hemisphere, semi-ellipsoid, bullet, or round-bowl shape.

Fig. 29 shows an example where the second uneven structure 3320 has a constant center distance between adjacent bumps or recesses. As shown in Fig. 30 When the light is irradiated to the second uneven structure 3320, the second uneven structure 3320 emits diffused light in a specific direction relative to the travel direction of an incident light 3501.

In general, the diffracted light can be represented by the following expression: $$d\left(\mathrm{sin\; .alpha}\pm \mathrm{sin\beta }\right)=\mathrm{n\lambda }$$

In equation (1), d represents the distance between the bumps or recesses, and λ represents the wavelengths of the incident light and the diffracted light. Moreover, α represents the incident angle of the incident light, and β represents the emission angle of the diffracted light. Further, n represents an order. Since the most representative is diffused light, it can be considered that n = 1 is satisfied.

The incidence angle α may be the same as the emission angle of zero or diffracted light, that is, regular reflected light. For parameters α and β, the positive direction is defined as a clockwise direction with respect to the direction normal to the display Fig. 28 , Equation, (1) can be transformed as below: $$d\left(\mathrm{sin\; .alpha}-\mathrm{sin\beta }\right)=\mathrm{\lambda }$$

Thus, when the center distance between the bumps or recesses, and the incident angle α, that is, the incident angle of zero or diffracted light are constant, the emission angle 350 clearly a a 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350 350. Therefore, in the case where the illumination is white, the color is imaged by the imaging unit.

The second uneven structure 3320 has a distance of 400 nm or less between the bumps or recesses. Accordingly, the image appears almost black when captured in the normal direction. However, under a specific condition, that is, an environment where the incident angle α of white light is in the range of 60 ° to 90 °, the emission angle | β | of the primary diffracted light 3503 with a particular wavelength can be designed to be close to the incident angle.

For example, in a case where the incident angle α = 60 ° and d = 340 nm are satisfied, the emission angle | β | at λ = 600 nm is approximately 64 °.

On the other hand, since the first uneven structure 3310 is a diffraction grating structure or the like, it is difficult to design the emission angle.

Accordingly, in an operation by the authenticity determination device 3001, when the light source 3200 and the imaging unit 3101 are rendered relatively close to each other, a clear change in the color of the second uneven structure 3320 can be detected under a specific condition ,

Moreover, the anti-counterfeiting medium 3400 may have a configuration which uses surface plasmon propagation produced by a fine structure such as nano-meter controlling the depth of the uneven structure.

The anti-counterfeiting medium 3400 may also have a configuration which uses retro-reflection properties of microspheres or a spherical structure; a configuration like an angle-controlled mirror in a specific direction; and a configuration like printed products having an uneven structure produced by intaglio printing.

Further, the anti-counterfeiting medium 3400 may also have a configuration that uses a structure in which a large number of walls with some height, which are used for a peep prevention film or the like, are located in a narrow area to limit vision; a configuration which uses a parallax barrier in which thin lines are arrayed at a specific time on a surface. a lenticular lens or microlens arrays so that the image forms behind the lens looks as if it changes.

Further, the anti-counterfeiting medium 3400 may also have a configuration which includes a pearl pigment in which mica is coated with metal oxide, by printing or the like.

The anti-counterfeiting medium 3400 may have, for example, a configuration using a multi-layered thin film in which a refractive index of a transparent material or a metal is provided to a change in the color depending on the reflection angle and the transmission angle of the incident light due to interference phenomenon; a configuration in which a multi-layered thin film is crushed into flake shapes and applied as a pigment by printing or the like; a configuration using printed particles; in a liquid crystal material represented by cholesteric liquid crystal is immobilized in polymer or the like. The liquid crystal material may include a material in a planar shape or a material crushed into pigment to be used for printing or the like.

Further, the anti-counterfeiting medium 3400 may have, for example, a configuration which uses a magnetically oriented material in which a magnetic substance such as iron oxide, chromium oxide, cobalt and ferrite is magnetically aligned in a planar shape to impart directivity to the reflective light and transmission light; a configuration having a multi-layered film by using the above magnetically oriented material as a core and thus performing chemical processing or the like as described above; nano-meter sized particles represented by silver nano particles or quantum dots.

3300. The observation angle. 3300. The observation angle is 3300A. The observation angle is 310. A of the imaging unit 3101 and the normal line 3350. Here, the observation angle estimating unit 3105 the credit card 3300 in a three-dimensional space in which the Z-axis is taken as a direction parallel to the normal line 3350, and the X-axis and Y-axis are taken as parallel to each side of the credit card. 3300 is positioned in a two-dimensional plane including the X-axis and the Y-axis 3300 to the origin O of the three-dimensional coordinate system. The thickness direction of the credit card 3300 is parallel to the Z-axis. The three-dimensional shape of the credit card 3300 in advance as known information, together with the coordinate conversion equation described above.

The observation angle estimation unit 3105 3112 when calculating the observation angle of each piece of the 3300 in the three-dimensional coordinate system to each pixel (coordinate) of the captured image data (two-dimensional coordinate system) by using the above coordinate conversion equation. Thus, the imaging position at which the image data is captured in the three-dimensional coordinate system of the three-dimensional space, and the imaging direction of the image is obtained. Here, the observation angle estimating unit 3105 positions the credit card 3300 in the three-dimensional space as described above system, the normal line 3350 is parallel to the Z axis, and each side is parallel to the X axis or Y axis.

Then, on the basis of the three-dimensional shape of the credit card 3300, the observation angle estimation unit 3105 calculates at imaging position and at imaging direction of the imaging unit 3101, capturing the image data in the three-dimensional coordinate system. the observation angle estimating unit 3105 calculates at observation angle 3105. The observation angle estimation unit 3105 writes and stores the data The calculated observation angle, observation position, and image data in the image data storage unit 3112.

In the present embodiment, it is performed in advance for the imaging unit 3101 two-dimensional pixels in a two-dimensional coordinate system of the three-dimensional space in a two-dimensional coordinate system the captured image data. Accordingly, the above-described coordinate conversion equation which indicates a relative positional relationship between the imaging unit 3101 and the calibration board (hereinafter "external parameters"), as well as at the optical center of the imaging unit 3101, is a light beam incident vector at each pixel (two-dimensional pixel), lens distortion, and the like (hereinafter, "internal parameters of the imaging unit 3101") are estimated.

In other words, according to the observation angle estimation unit 3105, which is re-configured based, the global coordinate system is re-configured based on the two-dimensional image of the calibration board is isolated from multiple viewpoints. The coordinate conversion equation, in the two-dimensional coordinate system, which indicates the correlation between the coordinate points 310 in the two-dimensional coordinate system. is acquired when the camera calibration is performed.

The device is also shown in advance for the imaging unit 3101, and internal parameters of the imaging unit 3101 are known at the time of authenticity determination of the anti-counterfeiting medium in the identification device, and the three-dimensional shapes of the authenticity determination object and the anti-counterfeiting medium are also known. Accordingly, image data of the anti-counterfeiting medium is obtained from a plurality of different positions, and the above-described coordinate conversion equation is used to obtain information on a plurality of corresponding points between the coordinate points in the three-dimensional coordinate system and The pixels of the image data in the two-dimensional coordinate system corresponding point coordinates, the relative positional relationship between the imaging unit 3101 and the anti-counterfeiting medium can. Similarly, in the case where the anti-counterfeiting medium is captured only once, the above-described coordinate conversion equation is used to obtain information on a plurality of corresponding points between the coordinate points in the three Thus, the relative positional relationship between the imaging unit 3101 and the anti-counterfeiting medium can be estimated. That is, the observation position and observation angle of the imaging unit 3101 in capturing an image of the anti-counterfeiting medium can be estimated.

In the present embodiment, an observation angle in capturing image data can be used by Z. Zhang ( Z. Zhang, "A flexible new technique for camera calibration", IEEE Transactions on Pattern Analysis and Machine Intelligence, Vol. 11, pages 1330-1334, 2000 ), which is one of the well-known techniques of camera calibration. Z. Zhang is used to estimate the observation angle, the image is captured and the image is captured fixed focus when the camera calibration is performed.

Referring back to Fig. 24 3106. The image obtained by the imaging unit 3101. The image obtained by the imaging unit image unit 3101, the available image unit 3106 Further, the available image selecting unit 3106 determines, for example, whether or not the entire shape of the anti-counterfeiting medium 3400 is captured in the captured image data, whether the anti-counterfeiting medium 3400 is in focus, and whether or not the luminance histogram is distributed (described later).

Then, the available image selecting unit 3106 selects the captured image data within the determination angle available for authenticity determination as the image data available for use in the authenticity determination process.
The image data collection unit 310 is added to the image data collection unit. The image data collection unit is used to collect image data in the image data storing unit 3112.

Further, the available image 3106 determines whether the observation angle is calculated by the observation angle estimation unit 3105 , or else the observation angle to the already-obtained setting. The number of the setting is the same as the specified number.

That is, as the specified embodiment. The image of the angle of view is the image of the angle of interest the captured image data table for authenticity determination. The image of the image is displayed on a white background. 3106 causes the reference image generation unit 3107 to generate a reference image.

Fig. 32 is a diagram illustration of a data collection unit for authenticity determination in the image data storage unit 3112. shown in Fig. 32 pieces of the image of the image of the image data, the image of the data of the image data, the image of the data, the image of the data, and the location of the data image data and reference image data, which are correlated to each other, are written and stored.

In this image it is used for authentication in the authenticity determination process. The captured image data identification information. The reference image data address 3112. The reference image data 3112. The reference image data 3112 and serves as an index image of the reference image data when it is read out image data stored in the image data address is image data for comparison. The degree of similarity is a numerical value representing a similarity between the image data and the reference image data.

Referring back to Fig. 24 , the reference image generation unit 3107 generates the image of the reference image 3106. The reference image data is read from the same image anti-counterfeiting medium 3400. As described above, the anti-counterfeiting medium 3400. image data, and anti-counterfeiting medium 3400 OVD ink or pearl pigment including a pigment in which mica is coated with metal oxides, a process of forming a laminate of layers having different refractive indexes, or a configuration formed of cholesteric liquid crystal.

Accordingly, the reference image generation unit 3107 generates the reference image data in accordance with each of the above configurations. For example, in the case where the anti-counterfeiting medium 3400 is formed using the diffraction grating, the reference image is calculated and generated by simulation using a reference image generation function, which takes the observation angle as a parameter, based on diffraction grating design information. Then, the reference image generation unit 3107 writes and stores the image data into the image data storage unit 3112, and sets the address of the image in the data source. The reference image generation unit 3107 correlates them with the image image data collection unit in the image data storage unit 3112th

In some cases such as where OVD ink or pearl pigment is used, layers having different refractive indexes are not laminated, or cholesteric liquid crystal is used, can not be calculated using a function of the image data. In such cases, the anti-counterfeiting medium 3400 is imaged at every observation angle so that the image data is stored there as a database of image data in the image storage unit 3112. Thus, the reference image generation unit 3107 can read the data collection image of the image data collection image of the image data collection image of the data collection image of the data collection the captured image data to be compared.

The similarity calculation unit 3112, and sequentially reads the image data collection unit and the reference image data address. Thus, the similarity calculation unit 3108 reads: The similarity calculation unit 3108 Thus, the similarity calculation unit 3108 reads the captured image data corresponding to the image image image image image data address image data address from image data storage unit 3112.

The similarity calculation unit 3108 calculates a degree of similarity to the image data to read out, by using template matching. For example, the similarity calculation unit 3108 calculates a mean square error in the luminance of each pixel (each of RGB (red, green, and blue) if a color image is used). accumulates the mean square error, and outputs the additional result as a numerical value. The lower the numerical value of similarity, the higher the similarity between the image data and the reference image data. The image of the pixel is in a different color. It is used in the reference image data.

Alternatively, the similarity calculation unit 3108 may be used in conjunction with a data processing system proper color space, a square value of a Euclidean distance of the color space is added up and in addition as a result of the numerical value indicating the degree of similarity. As with the case of the mean square error, the lower the numerical value of the similarity, the higher the similarity between the image data and the reference image data.

As described above, the similarity calculation unit 3108 calculates a degree of similarity between the image data and the image data in sequence image data storage unit 3112. The similarity calculation unit 3108 correlates with the data from which the data are calculated image data table for authenticity determination in the image data storage unit 3112.

Further, in the case where the intensity of the illumination is not the same as that of the light image.

For this reason, evaluation can be based on the color tone of RGB between consecutive pixels. That is, a difference in the mean square error between R / G between pixels in the image data and R / G between pixels in the image pixels of the image and image of a light bulb in the background. The R / G is calculated as a ratio of two pixels, a pixel A and a pixel B, as a ratio where the gradient of R of the pixel / G but also B / G (a ratio between the gradient of B and the gradient of G) may also be used in combination. The prevent pixels as described in are defined in advance as a combination of pixels R / G or B / G.

Each time a degree of similarity is detected, the image of the identification data is retrieved from the captured image data table for authenticity determination. Then, the authenticity determination unit 3109 compares each of the similarities corresponding to the determination image. The similarity between the image and the image obtained at a certain angular momentum (within a given angular range) and the reference image obtained corresponding to the observation The angle of the image is calculated from the angle of view, and the numerical value is given. The different degrees of similarity are obtained according to the observation angle, and the authenticity determination unit 3109 performs an authenticity determination process for the identification medium using the similarity threshold corresponding to the observation angle.

The authenticity determination unit 3300 (object for authenticity determination) to which the anti-counterfeiting medium 3400 is attached as fake (a non-authentic product) if The degree of similarity is not the same as the similarity threshold. Further, the authenticity determination unit 3109 calculates similarities for one or more pieces of image data, and that the credit card 3300 (object for authenticity determination) to which the anti-counterfeiting medium 3400 is attached as genuine (to an authentic product). The number of pieces of image data used for authenticity determination, that is to say, the number of different imaging angles at which the image data is used is determined data at each of the imaging angles is set in advance).

Here, each time the image is taken at the imaging angle determined by authenticity determination, the authenticity determination unit of the anti-counterfeiting medium 3400 has made a determination of "genuine "to the progress notification unit 3110.

Each piece of information is supplied from the unit of authenticity 3109, 3110 integrates the supplied piece of information to the piece of information image data determined to be "genuine" in comparison with the reference image data. Then, the progress notification unit 3110 calculates the degree of progress by dividing the number of pieces of information by a specified number.

The display unit 3111 is configured of, for example, a liquid crystal display, and display images on the screen thereof. The degree of progress is a numerical value representing a progress of the authenticity determination process.

In the image data storage unit 3112, the above-described captured image data, reference image data, captured image data and image data for authenticity determination are written and stored.

3110 displays, for example, a progress indicator so that the user can intuitively recognize the stage of progress.

Figs. 33A to 33C are views which illustrate 3111 by the progress notification unit 3110. In Figs. 33A to 33C a picture image 3112 of the credit card 3300 and the progress indicator 3111 is displayed on the screen 3111A Fig. 24 ) of the authenticity determination device 3001.

In Figs. 33A to 33C , a progress bar is used as the progress indicator 3111.

As shown in Figs. 33A and 33B , a progress meter 3111B fills the area corresponding to the percentage of calculated degree of progress. Accordingly, in the present embodiment, the user can easily recognize the progress of authenticity determination. Therefore, the user can visually recognize that the process of authenticity determination is actually in progress, and smoothly perform the process of authenticity determination.

3111M each time a. 3111B to fill the area corresponding to the degree of progress 3111M each time a new degree of progress is obtained.

Fig. 33C where authenticity determination of the anti-counterfeiting medium makes a determination of "genuine".

When the authenticity determination process produces a result of "genuine", the degree of progress becomes 100%. Accordingly, the progress notification unit 3111M of the progress bar 3111B of progress bar (progress indicator 3111) with the bar 3111B. Further, the progress notification unit 3110 notifies the user in an intuitive manner that the authenticity determination result is "genuine" the screen 3111A. For example, when the process of authenticity determination process produces a result of "genuine", the result of notification image 3113A represents "genuine" to visually indicate the result of authenticity determination. 3111B in the progress meter 3111M of the progress bar. The progress notification unit 3110 notifies the user in an intuitive manner that the authenticity determination result is "fake" by displaying the result 3113A.

Referring back to Fig. 24 , the imaging control unit 3102, which is similar to the observation angle in the imaging of the anti-counterfeiting medium is within a range of angular range. In diffraction gratings or holograms. If the observation angle is not within the angular range, then the accuracy of the accuracy of the anti-counterfeiting medium can not be determined.

In this case, the imaging control unit 3102 causes the observation angle estimation unit 3105 to estimate an angle, which is to an imaging unit of the imaging unit 3101 When the camera is in an angular position, the camera is in an angular position within the angular range.

Moreover, the imaging control unit 3102 when capturing images 3101 satisfies imaging conditions for capturing image data.

The imaging conditions include, if necessary, presence or absence of an illumination or intensity of the illumination as an exposure condition.

The imaging control unit 3102 generates, as an imaging condition, a luminance histogram when setting the exposure condition of the imaging unit 3101. The imaging control unit 3102 indicates a gradient distribution of pixels and uses the generated luminance the image is not biased to a high gradient region or a low gradient region. For example, when the gradient distribution in the luminance histogram is biased to the low gradient region, that is, when the pixels are at the gradient near 0 in the captured image data while the gradient is expressed by 256 tones ranging from 0 to 255 The results of this comparison with the reference image data can not be performed. On the other hand, when the gradient in the luminance histogram is focused on the high gradient region, that is, when the image is at the edge of the image with the reference image data can not be performed.

Therefore, the exposure condition is required to be distributed in the luminance histogram to be present in the median of the gradient ranging from 0 to 255.

The imaging control unit 3102 has the brightness required to be adjusted to the gradient of the luminance histogram. 3102 to illuminate the anti-counterfeiting medium 3400 by the lighting unit 3104 with a relative intensity during imaging (for example, by irradiating flash light in the imaging direction). Further, when the authenticity determination device 3101 does not include the exposure control unit 3103 and the lighting unit 3104, the imaging control unit 3102 displays prompting the user to irradiate illumination with the necessary light intensity to the anti-counterfeiting medium 3400 on the screen of the display unit 3111.

On the other hand, the illumination of the light is on a white background. The light is isolated on a white background does not illuminate the anti-counterfeiting medium 3400, or can illuminate the anti-counterfeiting medium 3400 with a recent exposure during imaging. Further, the imaging control unit 3102 displays promptly the illumination of the anti-counterfeiting medium 3400 on the screen of the display unit 3111 in order to irradiate illumination with the required light intensity to the anti-counterfeiting medium 3400th

In the above-described processes, an exposure control table, which includes distributions of luminance histogram and control conditions. The exposure control table may be written and stored in the image data storage unit 3112 in advance. In this case, the imaging control unit 3102 searches for the luminance histogram of the image condition and the illumination of the display unit 3111 as described above.

Further, an illuminance sensor may also be provided for the exposure control unit 3103, and the exposure condition may be determined by the illuminance sensor. Here, an exposure control table, which includes illuminances and control conditions as well as illumination conditions, may be prepared. The exposure control table may be written and stored in the image data storage unit 3112 in advance. In this case, the imaging control unit 3112 searches for correlation with the illumination in the image data storage unit 3112 image of the display unit 3111 as described above.

Fig. 34 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the sixth embodiment. The process image of the image is reproduced in the following manner: corresponding to the respect.

Step S501:

The imaging control unit 3102 detects current imaging conditions as it is exposed to the authenticity determination object in the imaging unit 3101.

Step S502:

The imaging control unit 3102 presumes that the conditions for capturing the image have been exhausted.

The imaging module 3102 proceeds to the process to step S503. On the other hand, the image is in the process of being read. The process to step S504.

Step S503:

The imaging control unit 3102 extracts to the imaging position of the anti-counterfeiting medium 3400 in the captured image data. That is, the imaging control unit 3102 obtains a three-dimensional shape of the credit card 3300 (authenticity determination object) in the imaging range of the imaging unit 3101. The imaging control unit 3102 compares the three-dimensional shape of the credit card 3300 thus obtained and the three-dimensional shape of the credit card 3300 pre-stored to extract the region of the anti-counterfeiting medium 3400 in the imaging range of the imaging unit 3101.

Step S504:

The imaging control unit 3102 displays unsatisfied imaging conditions on the screen of the display unit 3111 to prompt the user to adjust the unsatisfied imaging conditions.

Step S505:

The imaging control unit 3102 compares the anti-counterfeiting medium 3400 to the imaging range of the imaging unit 3101 and the anti-counterfeiting medium 3400 to the pre-stored three-dimensional shape of the credit card 3300. Then, the imaging control unit 3102 the image of the entire anti-counterfeiting medium 3400, that is, the observation angle, is within a range of angular range.

The imaging control unit 3102 proceeds the process to step S506 if the observation angle of the imaging unit 3101 is within a range of angular range, and proceeds to the process of step S507.

Step S506:

The imaging unit 3102 causes the observation angle estimation unit 3105 to estimate the imaging direction, that is, the observation angle of the anti-counterfeiting medium 3400.

Thus, the observation angle estimation unit 3105 with the pre-stored three-dimensional shape of the credit card 3300 in the three-dimensional coordinate system 3400. Here, the observation angle estimation unit 3105 calculates the imaging direction in which the imaging unit 3101 images the credit card 3300 from the above comparison. Then, the observation angle estimation unit 3300 in the three-dimensional coordinate system on which the anti-counterfeiting medium 3400 is attached (the top or underside of the credit card 3300 on which the anti-counterfeiting medium 3400 is attached) and the imaging unit 3101 as the observation angle, and outputs the angle to the imaging control unit 3102.

Step S507:

The imaging unit 3101 displays a message on the screen of the display unit 3111, thus suggesting the entire region of the anti-counterfeiting medium 3400 is included within the imaging area of the imaging unit 3101.

Step S508:

Then, the imaging control unit 3102 assumes the imaging direction for capturing the image 3400 of the anti-counterfeiting medium 3400.

The imaging unit 3101 is within a range of angular range, and proceeds to the process of step S509 ,

Step S509:

The imaging unit 3101 displays a message on the screen of the display unit 3111, thus indicating the illumination of the imaging unit 3101 range.

Step S510:

The imaging control unit 3102 displays the image of the anti-counterfeiting medium 3400.

As the user confirms the screen, the user inputs to imaging command via an input unit of the authenticity determination device 3001.

Thus, the imaging control unit 3102 causes the imaging unit 3101 to perform imaging process to obtain captured image data.

Step S511:

The imaging control unit 3102 adds captured data to the image data storage unit 3112 together with a captured image data address, which is at address pointing to A region of the image data storage unit 3112 in which the image data is written.

Fig. 35 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the sixth embodiment.

Step S521:

The available image unit 3106 receives the unprocessed data image in the image data storage unit 3112.

If the image is not processed, the image is available 3106 proceeds the process to step S522. On the other hand, the image is in the image field, 3106 repeats step S521.

Step S522:

The available image unit 3106 reads a data image from the captured image data table.

The available image selection unit 3106 sequentially reads the unprocessed image data from the image data storage unit 3112 by using the image data image.

Step S523:

The available image selecting unit 3106 the image data.

The image 346 is in focus, for example, whether the anti-counterfeiting medium 3400 is included in the image data, whether the anti-counterfeiting medium is in focus, and whether the luminance histogram is specific distributed. The available image image is also available for comparison with the reference image data S524.

Step S524:

The image image data collection unit 3106 adds determination image data identification information to the image image data. The image data collection unit is located in the image data collection unit. The image data collection unit is located in the image data collection unit unit 3112.

Step S525:

Image 3106 returns the process to step S521 and again obtains the captured image data.

3411. The image is displayed on the display screen 3111, suggesting the current image is displayed on the counter 3400 appropriate focus and appropriate distribution of luminance histogram, and obtaining it. 3400 is being in progress and further information on the anti-counterfeiting medium 3400 is required to advance the authenticity determination process.

Step S526:

The observation angle estimation unit 3105 reads the image of the image data collection unit 3112. Then the observation angle estimation unit 3105 3112. The observation angle estimation unit 3105 uses the captured image data to read and collect the data from the image data storage unit 3112, obtains the observation angle for each piece of the captured image data in the three-dimensional coordinate system, and outputs thereon the image selecting unit 3106.

Step S527:

The available angle of view observation unit 3105 is included in any of the observation angles.

If the attention is given to the angle of view, the unit is located in the vicinity of the image image data table for authenticity determination and process to step S525. Viewing angles and angles of interest in the camera are in the process of being read.

Step S528:

Based on the image of the image being captured, the reference image is generated. The reference image generation unit 3107 writes to the image data storage unit 3112, and writes to it.

Step S529:

The similarity calculation unit 3108 reads, The similarity calculation unit 3108 reads, The similarity calculation unit 3108 reads from the captured image data storage unit 3112, a captured image data address which has been read. The similarity calculation unit 3108 reads, from the image data storage unit 3112, captured image data corresponding to the image data address which has been read. Further, the similarity calculation unit 3108 receives data from the image data storage unit 3112 by using the reference image data address.

The similarity calculation unit 3108 calculates the degree of similarity in the image data to the reference data by using template matching. The similarity calculation unit 3108 correlates the calculated data to the image data collection unit 3112.

Step S530:

The authenticity determination unit 3109 reads from the image data table for authenticity determination in the image data storage unit 3112, the degree of similarity has not been measured.

Then, the authenticity determination unit 3109 is given the degree of similarity. The authenticity determination unit 3109 determines that the anti-counterfeiting medium is genuine and thus the authenticity determination object is genuine (an authentic product), and proceeds to the process to step S531. On the other hand, when the degree of similarity is detected, the authenticity determination unit 3109 determines that the anti-counterfeiting medium is fake and thus the authenticity determination object is fake (a non-authentic product), and proceeds to the process to step S536.

Step S531:

The authenticity determination unit 3109, when determining that the anti-counterfeiting medium is genuine, outputs the information to the progress notification unit 3110, instructing the process of the invention.

The progress notification unit 3110 increments the number of pieces of information to be determined (adds 1).

Then, the progress notification unit 3110 divides the integrated value degree of progress.

Step S532:

The progress notification unit 3111 displays the calculated degree of progress on the screen of the display unit 3111 (for example, the progress indicator 3111 shown in Figs. 33A to 33C ) to notify the user of the degree of progress.

Step S533:

The progress notification unit 3110 assumes the number of pieces of information. When it reaches the specified number, the progress notification unit 3109, and proceeds the process to step S534.

On the other hand, 3110 proceeds the process to step S525.

Step S534:

The authenticity determination unit 3109 3110 exceeds a default "genuine" -determination threshold. The authenticity determination unit S535 if the degree of progress is not more than the "genuine" -determination threshold.

Step S535:

The authenticity determination unit 3110 indicates that the authenticity determination object is an authentic product (for example, see Fig. 33C ). Then, the authenticity determination device 3001 terminates the authenticity determination process for the authenticity determination object.

Step S536:

The authenticity determination unit 3109 indicates that the authenticity determination object is a non-authentic product. Then, the authenticity determination device 3001 terminates the authenticity determination process for the authenticity determination object.

Accordingly, the user can intuitively recognize the stage of authenticity determination as proceeding as he moves the authenticity determination device 3001 from the changes in the progress indicator. Accordingly, the process of authenticity determination of the anti-counterfeiting medium 3400 is performed.

Further, the image of the anti-counterfeiting medium is captured by the anti-counterfeiting image medium is genuine or fake. Authenticity determination of the anti-counterfeiting medium (genuine or fake) can be carried out by an anti-counterfeiting medium (genuine or fake). counterfeiting medium with a simple capturing device image as a general purpose digital camera.

In the present embodiment, an example of the progress notification unit 3111 displays the progress indicator indicative of the degree of progress of authenticity determination on the screen of the display unit 3111 as a technique of progress notification in authenticity determination.

However, the progress notification unit 3110 may also be configured to display a progress circle or a progress dialogue on the screen of the display unit 3111 as the progress indicator authenticity determination.

Figs. 36A to 36C The views of the display unit 3111 are not the degree of progress displayed on a screen of the display unit 3111.

Fig. 36A shows an example of what the progress indicator is on the screen of the display unit 3111 In the example shown in Fig. 36A , the progress indicator may not be a rectangular shape, and may be an image of any shape.

Fig. 36B shows an example in which the progress indicator is displayed on the screen of the display unit. In this case, the final shape may be displayed when the authenticity determination is completed as genuine (an authentic product) and a broken shape may be displayed when the authenticity determination is completed as fake (a non-authentic product). In the example shown in Fig. 36B , the progress indicator may not be the shape of the mold. For example, at image of animal that grows up corresponding to the stage of progress may be displayed. In this case, when the authenticity determination is completed as genuine (an authentic product), an image associated with a matured state or the determination as genuine (for example, an image of an angle) may be displayed. Further, when the authenticity determination is completed as fake (a non-authentic product), at image associated with an initial shape before growing starts or the determination as fake (for example, an image of a demon or devil) may be displayed.

Fig. 36C shows an example of the progress of the display unit 3111 is an image of numerical character of percentage (%), which indicates the end of determination , In the example shown in Fig. 36C , the progress indicator may not be the end of authenticity determination. For example, in image of numerical character that indicates the changes in level or stage may be displayed.

In addition to the examples shown in Figs. 36A to 36C , the progress indicator displayed on the screen of the display unit 3111 may thus be an image of characters or objects such as sun, light, animal, and structure displayed in a region. The progress notification unit 319 may be used in the future or later in the year of construction can recognize the degree of progress from the flashing state of the display.

Alternatively, the progress indicator appears as the authenticity determination product), and a cross mark is displayed when the authenticity determination is completed as a fake (a non-authentic product).

Alternatively, the image of the anti-counterfeiting medium 3111 may have a luminance that changes from low to high intensity corresponding to the stage of progress of authenticity determination. That is, the progress notification unit 3111, the image of the anti-counterfeiting medium 3100, and the image 3400 of the anti-counterfeiting medium 3400 in the captured image with the same luminance as the 3400 image with the anti-counterfeiting medium 3400 when it is imaged in the captured image, corresponding to the change in the degree of authenticity determination.

Alternatively, in place of the aforementioned progress indicator, a vibrator of mobile terminals or smartphones may be used. For example, the progress notification unit 3110 may be used to control a vibrator function unit in mobile terminals or smartphones upon actuation of the application of authenticity of the authenticity determination proceeds.

Alternatively, the progress notification unit 3110 may be audited at the terminal of a terminal or terminal thus notify the progress in an intuitive manner as the stage of authenticity determination proceeds.

Alternatively, the progress notification unit 3110 may be used to measure the accuracy of the performance of the authentication process speaker or audio terminal of mobile terminals or smartphones so it moves to a scale of higher frequency as the stage of the authenticity determination proceeds. In this case, change in the degree of progress may also be notified when the authenticity determination process produces a result of "genuine" or by simply enhancing the frequency of a tone.

<Seventh Embodiment>

Hereinafter, with reference to the drawings, a seventh embodiment of the invention will be described.

An identification device of the seventh embodiment is shown in FIG Fig. 24 , In the sixth embodiment, the authenticity determination process is performed. In the seventh embodiment, however, the authenticity determination process is performed in authenticity determination. Here, each of them has a different observation angle. The imaging process is shown in the flowcharts of Fig. 35 ,

Fig. 37 authenticity determination process for authenticity determination object using an anti-counterfeiting medium in the identification device according to the seventh embodiment.

Steps S521 to S527, S528 to S530, and S533 onward are similar to the operation of the flowchart shown in FIG Fig. 35 , Hereinafter, the description is only meant to be an illustration of the embodiment.

Step S531A (S531B):

The progress notification unit 3112 to obtain the number of imaging angles.

The progress notification unit 3110 adds the number of times the information is given and the sum of the number of times it is calculated is given. to calculate the degree of progress.

Step S532A (S532B):

The progress notification unit 3111 displays the calculated degree of progress on the screen of the display unit 3111 (for example, the progress indicator 3111 shown in Figs. 33A to 33C ) to notify the user of the degree of progress.

In advance, the progress notification unit 3111 is displayed in front of it , Accordingly, the user can intuitively recognize how he / she is doing it. Accordingly, the process of authenticity determination of the anti-counterfeiting medium 3400 is performed.

<Eighth Embodiment>

Hereinafter, with reference to the drawings, an eighth embodiment of the present invention will be described.

Fig. 38 is a block diagram which illustrates a configuration example of an identification device according to the eighth embodiment. In Fig. 38 The authentication device 3001A includes an imaging control unit 3102, an observation angle estimation unit 3105, an available image selecting unit 3106, a reference image generation unit 3107, a similarity calculation unit 3108, to authenticity determination unit 3109, to display unit 3111, and to image data storage unit 3112. Further, the imaging device 3002 includes an imaging unit 3101, exposure control unit 3103, and illumination unit 3104. In Fig. 38 , the same elements as those of the third embodiment are denoted by the same reference characters.

In the present embodiment, the identification device is configured as the imaging device 3002A. With this configuration, general purpose digital cameras or mobile terminals (including mobile phones and smartphones) can be used as imaging devices to capture the image data for authenticity determination.

Further, the authenticity determination device 3001A may be configured as a cloud so as to communicate with digital cameras or mobile terminals, which are not shown, via an information communication network such as internet. The authenticity determination device 3001A may be configured to perform the process of authenticating the anti-counterfeiting medium by using the digital camera or terminals as the sixth and seventh individual.

<Ninth Embodiment>

Hereinafter, with reference to the drawings, a ninth embodiment of the present invention will be described. In the mentioned sixth to eighth person, the anti-counterfeiting medium is retroreflective and the illumination unit 3104 is integrated with the device of authenticity 3001 or with the imaging device 3002 together with the imaging unit 3101. In some cases, however, the anti -counterfeiting medium may be a type of permitting light from the illumination 3200 as shown in Fig. 26 to be transmitted (for example, transmission hologram) and the image of the transmitted light is used for authenticity determination. In this case, the illumination 3200 needs to be located at the location where the light is transmitted through the anti-counterfeiting medium. Accordingly, the illuminating unit 3104 needs to be isolated from the imaging device 3002 or the authenticity determination device 3001.

Fig. 39 is a block diagram which illustrates a configuration example of an identification device according to the eighth embodiment. In Fig. 39 The illumination device 3003 (illumination unit 3104) is isolated from the device 3001A and the imaging device 3002A. Accordingly, as shown in Fig. 26 , imaging light from the illumination device 3003 (light source 3200) is incident on the anti-counterfeiting medium 3400 at an irradiation angle β. With the supply of the light imaging, the anti-counterfeiting medium 3400 emits light of a predicted pattern. As described above, the pattern of light is different depending on the observation angle α. Further, the pattern of light emitted from the anti-counterfeiting medium 3400 is different depending on the irradiation angle.

As described above, in the case where the anti-counterfeiting medium has characteristics of transmission, not only the angle of observation and the irradiation angle of the lighting device 3003 to the anti-counterfeiting medium 3400 in capturing an image for authenticity determination needs to be adjusted so that the irradiation angle β 3400 for the anti-counterfeiting medium 3400 during a simulation corresponding to the anti-counterfeiting medium 3400 for generating the reference image data or in capturing image data in advance.

Accordingly, the identification device 3001A includes the imaging device 3002A and the illumination device 3003. The authentication device 3001A includes an imaging control unit 3102, an observation angle estimation unit 3105, an available image selecting device unit 3106, a reference image generation unit 3107, a similarity calculation unit 3108, an authenticity determination unit 3109, a display unit 3111, and an image data storage unit 3112. The authenticity determination process is the same as that in the sixth embodiment and the seventh embodiment.

Further, the imaging device 3002 includes the imaging unit 3101 and the exposure control unit 3103. In Fig. 39 , the same elements as those of the third embodiment are denoted by the same reference characters. The illumination device 3003, with the illumination unit 3104, is not limited to general illumination, which is continuously irradiated to an illumination target short period of time. The illumination device 3003 irradiates, in response to the light emission instruction from the exposure control unit 3103, the imaging target with a definite intensity of light.

According to the image of the anti-counterfeiting medium, the image of the anti-counterfeiting medium is captured determine whether the anti-counterfeiting medium is genuine or fake. Authenticity determination of the anti-counterfeiting medium (genuine or fake) can be carried out by an anti-counterfeiting medium (genuine or fake). counterfeiting medium with a simple capturing device image as a general purpose digital camera.

Further, according to the illumination device 3001A, the device 3002A, it is possible to capture the image anti-counterfeiting medium having differential patterns of transmitted light depending upon the illumination of the device 3003 transmits through the anti-counterfeiting medium.

Furthermore, a program for implementing the functions of the authenticity determination device 1 of Fig. 1 , the functions of the authenticity determination device 1A of Fig. 22 , the functions of the authenticity determination device 3001 of Fig. 24 , and the functions of the authenticity determination device 3001A of Fig. 38 The authenticity determination of the anticounterfeiting medium is carried out in a computer-readable manner using the captured image data. The computer system should be construed to include operating systems (OS) and hardware such as peripheral devices.

Further, the computer system should be construed to include a World Wide Web (WWW) system provided with a website provisioning environment (or display environment). Further, the computer-readable recording medium, such as flexible disc, magneto-optical disc, read-only memory (ROM), or compact disc-read only memory (CD-ROM), or a storage device such as hard disc built into the computer system. the computer readable recording medium should be construed to include devices that store for a certain period of time, such as volatile memory (random access memory (RAM)) in the computer system which serves as a server or client when a program is transmitted via a network search as the internet or a communication circuit search as a telephone line.

Furthermore, the above programs may or may not be transmitted to another computer system via a transmission medium or transmission waves in a transmission medium. The transmission medium that transmits the program to a medium has a function of transmitting information, including a network (communication network) search as the internet, and a communication circuit (communication line) such as a telephone line. The above program may be the one implements part of the above functions. Further, the program may be a differential file which implements the above functions when combined with a program pre-recorded in the computer system.

Reference Signs List

• 1, 1A, 1B, 3001, 3001A: Authenticity determination device (identification device)
• 2, 2A, 3002, 3002A: Imaging device
• 3, 3003: Illumination device
• 101, 3101: Imaging unit
• 102, 3102: Imaging control unit
• 103, 3103: Exposure control unit
• 104, 3104: Illumination unit
• 105, 3105: Observation angle estimation unit
• 106: match-percentage notification unit
• 107, 3106: Available image selecting unit
• 108, 3107: Reference image generation unit
• 109, 3108: Similarity unit
• 110, 3109: Authenticity determination unit
• 111, 3110: Progress notification unit
• 112, 3111: display unit
• 113, 3112: Image data storage unit
• 200, 3200: Light source
• 300, 3300: Credit card
• 302, 3302: relief structure forming layer
• 310, 3310: First uneven structure
• 320, 3320: Second uneven structure
• 310, 3310: Bump
• 330, 3330: Directional scattering structure
• 331, 3331: Light scattering structure

Claims (18)

An identification device that performs an anti-counterfeiting medium which is an observed light-pattern-change depending on an angle, the identification device comprising: a similarity calculating unit that calculates a degree of similarity between image and image data of the anti-counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether or not the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and a match-percentage notification unit indicative of a degree of agreement between an imaging viewpoint for imaging the anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the captured image data used for authenticity determination , The difference in the value of the imaging device is shown in the figure below in a three-dimensional coordinate system. The identification device according to claim 1 is not available at the time of issue determination. The image of the image of the image is taken from the image -counterfeiting medium. Image of the image in the video frame of the anti-counterfeiting image medium. Indicator of the match-percentage on a display unit screen of the display unit to notify the match-percentage. An anti-counterfeiting medium is used for the detection and detection of an antibody. calculating a degree of similarity between the image and the image of the anti-counterfeiting medium; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the same; and notifying a match-percentage indicative of a degree of agreement between an imaging viewpoint for imaging the anti-counterfeiting medium and a reference imaging viewpoint by a match-percentage notification unit. The computer program to perform the identification process. The computer program for performing the anti-counterfeiting procedure is described in detail below method comprising: calculating a degree of similarity between image and image data of anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and notifying a match-point indicative of a degree of inter-image at an imaging viewpoint for imaging the anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the image data used for authenticity determination. A computer readable medium, including an anti-counterfeiting medium, is mounted on an anti-counterfeiting medium to perform the method of identification calculating a degree of similarity between image and image data of anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and notifying a match-point indicative of a degree of inter-image at an imaging viewpoint for imaging the anti-counterfeiting medium and a reference imaging viewpoint which is predefined as the imaging viewpoint for the image data used for authenticity determination. An identification device that performs an anti-counterfeiting medium which is an observed light-pattern-change depending on an angle, the identification device comprising: a similarity calculating unit that calculates a degree of similarity between image and image data of the anti-counterfeiting medium and reference image data; an authenticity determination unit that performs authenticity determination as to whether or not the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and a progress notification unit that calculates and notifies a degree of progress, which is a ratio of authenticity determinations to a predefined number of authenticity determinations. The identification device calculates the value of the image, which is to be used as the source of information of pieces of reference image data. The identification device according to claim 11, in which the image is taken at the same time as the imaging angle. In the anti-theft image, the image of the image is taken from the image -counterfeiting medium is captured. The identification device according to which the image of the anti-counterfeiting medium is used , The device according to the present invention is a device for displaying information on a display unit unit to notify the degree of progress. An anti-counterfeiting medium is used for the detection and detection of an antibody. calculating a degree of similarity between the image and the image of the anti-counterfeiting medium; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the same; and calculating and notifying a degree of progress, which is by a progress notification unit. The computer program to perform the identification process. The computer program for performing the anti-counterfeiting procedure is described in detail below method comprising: calculating a degree of similarity between image and image data of anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and calculating and notifying a degree of progress, which is a ratio of authenticity to a number of authenticity determinations. A computer readable medium including an identification program for causing a computer to execute an identification process Depending on an Angling angle, the computer to perform the identification process. calculating a degree of similarity between image and image data of anti-counterfeiting medium and reference image data; performing authenticity determination as to whether the anti-counterfeiting medium is genuine or not on the basis of the degree of similarity; and calculating and notifying a degree of progress, which is a ratio of authenticity to a number of authenticity determinations.

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